Inventio Ag

Fritz Meyer

Paul Friedli

Joris Schroder

Jiri Kiml

Ladislav Vig

Josef Heine

An elevator control receives car calls for certain floors which are subject to a restriction of operation, but does not prevent the storage of these car calls. The car calls subject to the restriction of operation are only served during the trip in the opposite direction, if a load increase has been detected by a load measurement device during the change in the direction of travel. The restriction of operation is only cancelled during a predetermined time interval dependent on the movement of the car door and simultaneous occurrence of a load change caused by added travelers. Two storage cells are connected to the car call circuits for the car calls subject to the restriction of operation where an entered call, during a cancelled restriction of operation, is stored in the first storage cell and, during the restriction of operation, is stored in the second storage cell. A call stored in the first storage cell is transferred to the travel control of the elevator prior to the change of direction of travel and a call stored in the second storage cell is only transferred after the change of direction of the elevator.

Method and apparatus for controlling elevators with double cars

The bidirectional transmission apparatus contains as an essential element a wire matrix utilized in a two-fold or dual manner. The wire matrix comprises two groups of column conductors, each group being provided for one of the two signal transmission directions, and one group of line conductors common to all column conductors. A control unit forms a component of a microprocessor and cyclically controls the line conductors and the column conductors are synchronously scanned and activated, whereby signal transmitters and signal receivers connected to the intersection or crossing points of the wire matrix are detected and controlled in a pulsed manner. The frequency and scanning ratio of the cyclical scanning operation are selected such that even the shortest contact periods to be expected are reliably detected and that, when opto-electronic indicator or display elements are activated, a continuous light or radiation of sufficient intensity is visually discernible. Due to the functional two-fold utilization of the line conductors as well as due to the cyclical operation a high transmission capacity is ensured even if the electronic and installational expense is highly reduced. Using, for example, an 8 by 16-wire matrix there thus can be detected and activated a maximum of sixty-four call and limit or terminal switch signals as well as sixty-four signallings which are simultaneously present at the wire matrix.

Circuit arrangement containing wire matrix for signal transmission in

With this circuit arrangement a plurality of control commands can be inputted into a microcomputer system by means of only a single input channel and the microprocessor is relieved of the operation of scanning the peripherals for detecting the presence of control commands. By means of a release or enabling signal the microprocessor signals its preparedness for receiving interruptions, and the release or enabling signal activates a scanning and comparator unit arranged between an interrupt requirement input of the microprocessor and a peripheral unit. Thereafter the scanning and comparator unit scans control command transmitters grouped together in the peripheral unit and characterized by an address and compares the switching state thereof with a switching state which is stored under the same address. If the two switching states are different, there is generated an interrupt requirement or requisition and the stored switching state is adapted to the switching state of the control command transmitter.

Circuit arrangement for inputting control signals into a microcomputer

An apparatus for transmitting control signals to a transportation installation, such as typically an elevator wherein a respective diode matrix codes the cabin and floor calls, and the outputs of which are connected by common call lines with the inputs of a call memory system. A coding device is provided for coding the elevator cabin position and comprises switches attached to the elevator cabin and actuation elements arranged in the cabin chute. An actuation element is provided for each floor change and is associated with the changing binary place of the code word associated with the floor. The switches are connected by means of a respective series connected diode of a coupling system with the outputs of the cabin diode matrix and by means of the call lines with the input of a cabin position memory. A logic circuit serves to switch the diodes of the cabin and floor diode matrixes into their non-conductive or reverse state during travel of the cabin and for a given time span following standstill thereof and to switch the diodes of the coupling system into their forward or conductive state, and to disconnect the call lines from the call memories. This logic circuit, during the remaining time of standstill of the cabin, switches the diode matrixes into their conductive or forward direction and the coupling diodes into their blocking state or reverse direction as well as connecting the call lines with the call memories.

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Kussnacht, Switzerland

Fritz Meyer