FI90407C - Electronic code key - Google Patents

Description

90407

ELECTRONIC CODE KEY

The invention relates to an apparatus according to the preamble of claim 1 for extracting the operating mode of an elevator.

Elevators often require different key switches to change the operating mode of the 5 elevators. Depending on the case, the mode can be changed from the elevator car or the floor platform or from a control connection outside them. Relevant elevator operating methods include, for example, freight transport, cleaning, priority calls, decommissioning the elevator, doors au-10 ki / closed.

It has previously been known to define and change the mode of operation of an elevator using key switches. When using key switches, it must be known which switch corresponds to the input / output interface of each function. Additional specifications related to switch data must also be taken into account in production when developing the software. The specifications related to the key switches must therefore be made at an early stage, and errors made in production are difficult to correct in connection with the installation work in the field.

Connecting to Signal Devices Key switches require more than 20 depths than buttons and directional arrows. In particular for surface mount, i.e. this is a problem with wall-mounted devices without recessed installation. The installation of key switches causes additional work, as the switches require separate installation sots.

: 25 When using the key switches, you must be prepared for different operating possibilities, in which case several I / O lines are required for the elevator controller for signaling devices, but not all of these lines are used in normal operation. During system configuration, the components must be told which key switch 30 is associated with which input. This results in considerable delivery-specific design work and the possibility of errors.

The object of the invention is to eliminate the above-mentioned drawbacks and to provide simple and reliable equipment for changing the operating mode of an elevator. This 90407 is obtained with the features defined in the characterizing part of claim 1. Other preferred embodiments of the invention are set out in the dependent claims.

The apparatus according to the invention can use physically similar keys which fit the same "keyhole". The keyhole does not need physical depth, so that the surface mounting method can be used, in which case there is no need for recessed boxes. The keys can be coded either in production or during installation 10 fields, and the coding can be renewed if necessary. Only one key interface is required for the level and basket panels, so the hardware problem is reduced.

The key itself tells the operation code, so no configuration work is required for the key switches 15 on the various signaling devices and body panels. The use of key switches can be easily extended, for example, to target floor calls and the like. The code key can be applied in myds access control, in which case it is possible to register the usage time of each key. When a reprogrammable memory is used, the key code paths can be changed. This can also be done from the elevator driver's user interface. If the key is lost, it is possible to eliminate its right to use it individually. This allows other code keys attached to the system to be used without security risks.

The invention will now be described with reference to the accompanying drawing, which shows an embodiment of the apparatus according to the invention.

The elevator controller 1 provides control of the floor and car calls received to an elevator drive system (not shown), which includes 30 elevator cars and a motor that moves the counterbalance of the hoisting hoist and the traction sheave. The elevator controller 1 is connected by connecting lines to the shaft wiring 3, where the data transmission traffic required by the elevator passes through serial traffic. A special user interface 2 is also connected to the elevator controller, by means of which the operation of the elevator 3 90407 elevator can be controlled and tested, for example in connection with maintenance.

The shaft wiring 3, on the other hand, is connected to the control connections of each deck and car. The figure shows one such connection in the form of a call button box 4. The box 4 is located on the floor platform and has pushbuttons 5 for up and down calls, the signals corresponding to which calls are routed in serial communication along the shaft wiring 3 to the elevator controller 1.

Three short-circuit-protected contact surfaces 6 are arranged in the surface-mounted box 4, which are connected to the serial communication bus. Similar contact surfaces are arranged on different floor levels and in boxes in the basket. The corresponding contact surfaces are also in the user interface 2 connected to the elevator controller 1. By means of the programming keys 10 of the user interface 2, it is also possible to reprogram the code key 7 arranged in its programming interface 9.

The code key 7 has members 8 corresponding to the contact surfaces 6, which are suitable for connection to the contact surfaces. The code key has an electronically programmable rouist in which the information corresponding to the operating mode of the elevator is stored. The memory can be implemented with various memory elements, such as EEPROM or NVRAM circuits. When the code key is pressed on the interfaces of the interface, the mode information stored in the memory is transferred to the elevator controller along the serial communication field. Using appropriate logic can be; The 25 keys store information corresponding to several modes of operation, so that people who need different modes only need one key. Likewise, the return to normal operation can be made with the same key.

According to another embodiment, the data transmission between the key and the user interface can also be performed wirelessly, as is well known in various corresponding control devices. For example, when destination layer calls are stored in a code key, its kSytto area is further expanded.

“90407

The invention has been described above with reference to one embodiment thereof, but embodiments of the invention may vary within the scope of the following claims.

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Claims (7)

An apparatus for changing the operating mode of an elevator or elevator group, the apparatus comprising connections (4,9) located in elevator cars, floor platforms and / or other elevator user connections, to which a mode changing member (7) can be connected and which are connected to an elevator controller (1). ) that the mode-changing means (7) is a code key in which the information corresponding to the mode of operation is stored in the memory and has, in a manner known per se, 10 means (8) for bringing it into communication with the interface (4,9) and that the operating mode information stored in the code key (7) is transmitted using serial communication to the elevator controller (1) - Apparatus according to Claim 1, characterized in that the code key (7) and the interface (4, 9) have corresponding contact surfaces (6, 8). Apparatus according to claim 1, characterized in that in order to transmit the operating mode information wirelessly, the code key (7) and the interface S (4) have means for sending and receiving the code signal 20 and in that the code key (7) has a power supply. Apparatus according to one of Claims 1 to 3, characterized in that the memory is reprogrammable. Apparatus according to Claim 4, characterized in that the user interface S (2) in connection with the elevator controller (1) has programming means (9, 10) for a code key (7). 5 90407 Apparatus according to one of the preceding claims, characterized in that the connection is arranged in a surface-mounted pushbutton guide (4). Apparatus according to one of the preceding claims, characterized in that information restoring the normal operating mode is stored in the code key (7). 6 90407