Abstract: A display device for a lift system with at least one lift shaft, in which several lift cabins travel. The device comprises an allocation manager that allocates an identifier to a lift cabin carrying out a transport job and a display at a boarding location that outputs an identifier of a lift cabin. The display can simultaneously display the identifier for several lift cabins.

Abstract: A positioning system having a plurality of transponder modules each located at a known location for receiving an electromagnetic signal and emitting a light signal, at least one transceiver module for emitting an electromagnetic signal and receiving the light signal, and apparatus processing the received light signal to determine a position of the at least one transceiver module.

Abstract: The present invention relates to a method and an elevator system for monitoring elevators by using a virtual elevator group. The method for monitoring elevators in an elevator system including a plurality of elevators classified into a plurality of elevator groups, and at least one virtual elevator group including a plurality of elevators, at least one of which is included in a different elevator group and displaying the elevator related information on the elevators included in the selected virtual elevator group.

Abstract: A forward-control counterweight fork-lift truck has a liftable and tiltable load-lifting device (1), a traction drive and operating drives for the movement of the load-lifting device (1). A calculation model (D) is stored in a control device (SE), to which directly or indirectly acting sensors (S) are connected for detecting the lifting load (L), the lifting height (H), the tilting angle (WM), the load torque (M), the direction of travel (R), the driving speed (V), and the steering angle (WL). The control device (SE) is designed to determine a driving and load state (Z) based on the detected physical variables (L, H, WM, M, R, V, WL) and the stored calculation model (D) and is operatively connected to the traction drive and the operating drives. Depending on the driving and load state (Z) determined, the operating speed, starting and braking acceleration, and driving speed are each reduced.

Abstract: In a method for setting the floor associations of a plurality of operating units of an elevator installation, a plurality of operating units is distributed over a plurality of floors. These floors can be traveled to by an elevator car having a transmitter unit. In the method, the elevator car is moved to a predetermined one of the floors. The operating unit allocated to the moved-to floor is activated. The position data describing the floor at which the operating unit is located are communicated from the transmitter unit to the operating unit and/or to a central control unit. The position data are stored in a memory unit of the operating unit and/or in the central control unit.

Abstract: Elevator comprising a car, a drive motor driving the car, a motor drive unit for controlling the drive motor and supplying power thereto, an encoder for sensing movement of the car, and an elevator rescue system for rescue operation in case of an emergency situation, wherein the elevator comprises one single encoder only for normal and rescue operation.

Abstract: Elevator system and a method for determining the position information of an elevator car is disclosed. The elevator system includes at least one elevator car, which is fitted to move in an elevator shaft, a control unit for controlling the motions of the elevator car according to calls conveyed to the control unit, and at least one landing call unit fitted in connection with a landing. The landing call unit includes a feature for giving a call and for sending a call to the control unit and a data transfer channel between the landing call unit and the control unit. At least one identifier is fitted in connection with the elevator car. The landing call unit also includes at least one reader fitted to detect the identifier of the elevator car when this is situated in the proximity of the reader.

Abstract: An elevator control system for controlling the movement of an elevator car up and down an elevator shaft between floors of a structure includes a call input device provided on each floor to indicate a passenger is waiting to be picked-up; a measuring device to indicate a load on the elevator car; and a controller to answer calls from the call input devices and move the elevator between floors, wherein the controller overrides calls received from the call input devices and does not stop the car to pick up passengers when the load indicates there a full car with no room for additional passengers. The measuring device may include a force transducer to measure the load on the elevator car. The load may be a measure of the number of passengers in the car. The load may be compared to a threshold and when the load exceeds the threshold a signal is provided to the controller to override the call input devices.

Abstract: An elevator has a car traveling along guide rails within a hoistway and a main drive propelling the car. A sensor mounted on the car measures a vertical travel parameter of the car, a comparator compares the sensed car travel parameter with a reference value derived from the main drive, and an auxiliary motor mounted on the car exerts a vertical force on at least one of the guide rails in response to an error signal output from the comparator.

Abstract: An apparatus and method for measuring a position of a moveable platform comprising a plurality of RFID tags encoded with location information situated at known locations and a plurality of visual markers situated at precise, known locations. An RF reader attached to a moveable platform reads the RFID tags to determine the approximate location of the platform. A camera apparatus attached to the moveable platform scans the visual marker. The scanned image is processed to provide the precise position information of the platform.

Abstract: A method for determining a position of a moving object, such as an elevator car in an elevator shaft, includes the steps of mounting a leading sensor and a lagging sensor to the moving object and spacing the leading sensor from the lagging sensor by an offset distance, mounting a plurality of spaced apart position indicators along a pathway of the moving object, transmitting signals representative of object position from the leading sensor and the lagging sensor to a controller as the sensors pass the spaced apart position indicators, and filling any gaps in the signal gathered from one of the sensors by using a correction factor established from the position sensed by the other sensor and the offset distance. A system for performing the method is described.

Abstract: An elevator supervisory system capable of managing abnormality data, operating condition data and car interior video data in association with one another, so that this data can be displayed in association with one another upon the occurrence of an abnormality.

Abstract: A positioning system for a moveable platform comprising at least one active array comprised of at least one light emitting element for transmitting a binary encoded identification, where the encoding may be spatial or temporal, positioned at a known location, at least one camera for acquiring an image of the at least one active array, component for receiving the binary encoded identification from the image, component for processing the image to determine the position of the active array with respect to the moveable platform, and component for combining the received binary encoded identification and the determined position to calculate a position of the moveable platform.

Abstract: A pair of elevator cars (10, 11) traveling in the same hoistway have their positions sensed (20-23, 29-32) to provide for each a position signal (35, 37) from which velocity signals (64, 65) are derived; lookup tables (66, 61) of safe stopping distance (B, S) for braking and safeties are formed as a function of all possible combinations of velocity (V(U), V(L)) of said cars. Comparison of safe stopping distances for contemporaneous velocities of said cars with actual distance between said cars provides signals (85, 98, 99) to drop the brakes (49, 50) of one or more of the cars, and provides signals (82) to engage the safeties (18, 18a, 19, 19a) of all cars if the cars become closer or if acceleration detectors (117, 118) determine a car to be in freefall.

Abstract: The present invention discloses and elevator system and a method for determining the position information of an elevator car. The elevator system according to the invention comprises at least one elevator car (1), which is fitted to move in an elevator shaft (2), a control unit (10) for controlling the motions of the elevator car (1) according to calls conveyed to the control unit (10), and at least one landing call unit (51) fitted in connection with a landing (5), which landing call unit (51) comprises means for giving a call and for sending a call to the control unit (10), and a data transfer channel (110, 120, 130) between the landing call unit (51) and the control unit (10).

Abstract: A lift measurement system is provided for determining a position of a load during a lift operation. The system includes a display that includes a scale and encloses a movable indicator that moves relative to the scale. A linkage is in communication with the load and the scale, such that movement of the load is translated to movement of the indicator relative to the scale to provide an indication of the position of the load. A plurality of displays and linkages may be installed at various load support zones such that the relative position of the corresponding indicators provides feedback related to the orientation of the load.

Abstract: A position reference system for use with a conveyance, such as an elevator (12). The system includes a code affixed to or embedded within a suspension device or primary motion coupling such as a rope or coated steel belt (16). A reader (28) in a fixed location determines the position of the conveyance.

Abstract: In an elevator apparatus, a control device obtains car information including at least one of car position information and car speed information based on a main detection signal from a main sensor unit. An auxiliary sensor unit detects arrival of a car at a preset reference position with in a hoistway to generate an auxiliary detection signal. The control device makes corrections to the car information based on the auxiliary detection signal.

Abstract: The present invention may be said to consist in a method of determining weight of a payload lifted by a rig of a load lifting machine, and/or a apparatus 21 system the weight being determined from at least one parameter being or indicative of the force or pressure existing in or applied by the rig while the payload is lifted and a compensation for friction and/or other losses in the rig 14.

Abstract: A safety system for supervising safety of an elevator may include a safety space in an elevator shaft, elevator buffers in the elevator shaft, or both; measuring means for continuous measurement of absolute position of an elevator car; and a safety device. If the safety system includes the safety space, its size may be reduced. If the safety system includes the elevator buffers, their size may be reduced. The safety device may be adapted to receive data about the absolute position of the elevator car; calculate a velocity of the elevator car at each instant of time using the absolute position; monitor the calculated velocity in order to ensure that the calculated velocity remains within an allowed motion limit curve; and control at least one stopping device for stopping uncontrolled motion of the elevator car if the calculated velocity exceeds the allowed motion limit curve.

Abstract: A control apparatus for an elevator has a support device mounted on a car, a detection device for detecting the position of the car, and a control unit for controlling operation of the elevator based on information from the detection device. The support device has a rail holding member, which is displaceable with respect to the car and is guided by a guide rail located in a hoistway in which the car moves. The detection device is located on the rail holding member.

Abstract: A sensor system for substantially simultaneously measuring and detecting the verticality or perpendicularity of the forklift vehicle mast and the vertical height displacement of the forks. The sensor system then alerting the operator of the satisfactory assessment of the precondition alignment of the forks so that, without the need for visual checking of the vertical positioning of the forks, the operator can insert the forks under the pallet load support surface and lift the load without causing damage to either the pallet or the load.

Abstract: A positioning system for an elevator cab (37) includes transponder modules (10) having a unique ID for receiving a signal (39) and emitting an ultrasonic signal when the signal is equivalent to the unique ID with a determination of position based on the time duration of the signals.

Abstract: The invention relates to a lift system (10) comprising a lift cage (11), which is provided with belt-like traction/drive means (14) which comprise markings (12) disposed along the length thereof. A device for detecting at least the position, optionally, also the speed and the acceleration of the lift cage, which is used to scan the markings (12), comprises a detector (13) which is secured to the lift cage (11) and is displaced therewith. The detector is, preferably, arranged in such a manner that it detects the markings (12) in one section of the traction/drive means (14) which extend from the underloop of the carrier rollers (19) on the lift cage (1) directly to a fixed point (14.4) of the traction/drive means (14).

Abstract: An apparatus for measuring a position of a moveable platform includes a plurality of transponder modules. The transponder modules include an electromagnetic transmitter adapted to emit an electromagnetic signal, and an acoustic receiver adapted to receive an acoustic signal. At least two of the plurality of transponders are disposed about the position to be measured. The apparatus also includes at least one transceiver module affixed to the moveable platform, which transceiver modules includes an acoustic transmitter adapted to emit an acoustic signal, an electromagnetic receiver adapted to receive an electromagnetic signal. The apparatus also includes a timing mechanism for measuring a plurality of durations between an emission of the acoustic signal and a receipt of the electromagnetic signal, and a computing mechanism for processing the plurality of durations to compute the position.

Abstract: A safety monitoring device is provided for a lift car which can be moved in a lift shaft by a traction drive via a lift control system and whose instantaneous position can be registered by a position registering device which supplies two position signals, produced independently of each other, in a predetermined time pattern, having two-channel evaluation of the position signals by means of a microprocessor in each case for location-dependent, instantaneous determination of the speed of the lift car and for comparison with a predefined movement profile, it being possible for a trigger signal that can be output via a safety relay stage to be generated if a predetermined instantaneous speed desired value is exceeded.

Abstract: A pair of elevator cars (23, 24) traveling in the same hoistway (27) in response to a controller (28) may stop with the doors closed, or remain at a stop with the doors open, whenever one of the cars has to wait until another car moves out of the way before the one elevator car can proceed to finish service to its passengers. Within each cab (30) both a sign (29) and a loudspeaker (33) may present the same message to the passengers, assuring them that the operation is normal and that there is no need for alarm.

Abstract: The present invention presents a method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system. In the method the accelerations of the elevator car and the door of the elevator are measured with sensors. By integrating the acceleration information two times in relation to time the position information is determined. When the condition monitoring system detects a fault, forecasts a malfunction occurring in the future or detects a significant change in the operation of the elevator or in the measuring signals related to the elevator, it is possible to attach to this information the location of the fault or event i.e. the position of the elevator or the position of a door of a certain floor level on the slide path. The position information can be synchronized to a separate reference point by means of a positioned switch by making an adjustment to the position information at the reference point.

Abstract: A device (40) for providing information regarding the position of an elevator car door (34) relative to a hoistway door (30) includes a reflector (42) supported on the hoistway door (30). A sensor (44) supported on an elevator car door (34) includes a plurality of sensing elements (46-50) for emitting radiation toward the reflector (42). Received radiation reflected from the reflector (42) provides an indication of the position of the car door (34) relative to the hoistway door (30).

Abstract: A synthetic fiber rope can be used to the limit of failure by setting a sensitivity of detection of the state of wear of the rope. Strands of the rope have indicator fibers or indicator yarn that have a high probability of losing electrical conductivity and thereby indicate cable wear. The matrix of the strand with indicator fibers or with at least one indicator yarn has a lower resistance to abrasion than the matrix of the other strands without indicator fibers or indicator yarns.

Abstract: In an elevator apparatus, first and second raised/lowered bodies are raised and lowered by hoisting machines. The second raised/lowered body has a raised/lowered main body and a rocking member rockably connected to the raised/lowered main body. The raised/lowered main body is suspended by a main rope via the rocking member. The main rope has a first rope end connected to the rocking member on one side of a rocking center of the rocking member and a second rope end connected to the rocking member on another side of the rocking center.

Abstract: The invention concerns a method and a system for integrating electric elements of an elevator in a single module, e.g. in the door operator of the elevator. Especially to reduce the number of components to be installed and to enable the electric elements of the elevator system to be added to the door operator on the elevator car already at the manufacturing stage. The basic idea of the method of the invention is to integrate electric components to be placed in the elevator system, such as location elements, acceleration sensors and door zone sensors, with the door operator or some other module already at the manufacturing stage of the elevator, e.g. by placing the active parts of the sensors in conjunction with the door operator and the passive parts on the floor level side.

Abstract: The invention concerns a device, a method and a system for improving the safety system of an elevator. The safety system of the invention comprises an electric safety device, which monitors the velocity and position of the elevator in the elevator shaft. The safety device is e.g. a computer that is able to stop the elevator, using the brake of the hoisting machine or an optional car brake. The basic idea of the safety system of the invention is to form a continuous limit curve for control of elevator speed. The limit curve defines the limits of allowed elevator motion, which are determined on the basis of the nominal speed of the elevator and the location of the car.

Abstract: The present invention provides an elevator position compensation system which minimizing the re-leveling of an elevator car in an elevator shaft. The elevator car is suspended in the shaft by an elevator cable system and elevator motor, wherein the elevator position compensation system includes an elevator load sensor device for determining the weight of the elevator car, and generating a load signal indicative of the determined weight. An elevator position sensor determines the position of the elevator car in the elevator shaft and generates a position signal indicative of the determined elevator car position. An elevator control system receives the load signal and the position signal, which is processed by the control system in order to calculate a change in the cable system length associated with a load change within the elevator car, and wherein the calculated change in the cable system length is compensated by the elevator motor.

Abstract: The invention relates to an elevator system with at least one shaft, in which at least two cars can be made to travel along a common traveling path, and also with a shaft information system for determining the positions and speeds of the cars, which is connected to an electrical safety device.

Abstract: Safety equipment for an elevator installation with an upper elevator car and a lower elevator car, which cars are both movable substantially independently along a vertical direction in a common elevator shaft of the elevator installation includes a first electro-optical detection system with a first light source in a lower region of the upper elevator car and with a first detector which comprises a light-sensitive first sensor region in an upper region of the lower elevator car. The first light source issues a focused first light beam at a first angle with respect to the vertical direction. The first angle is predetermined such that on approach of the upper and the lower elevator cars the first light beam is incident on the first sensor region and thus is detectable by the first detector. In this case, the first detector triggers a reaction.

Abstract: A position detecting device for detecting the position of an object (12) movable along a predetermined path of movement, comprising a signal transmission medium (13) extending along the path of movement, a signal generator (15) movable together with said movable object (12), by means of which a signal can be coupled into the signal transmission medium (13), at least one signal receiver (29, 33) at an extraction location in an end portion of said path of movement, a signal propagation time measuring means (35, 37) adapted to determine the signal propagation time between coupling location and extraction location (45), wherein the signal generator (15) is designed to deliver a periodically repeating signal pulse sequence (FIG.

Abstract: There is provided a display system for an elevator which can display an operating state of an elevator car without a sense of discomfort even though data transmission performance is not improved. Data concerning an operating state of an elevator car is transmitted from an elevator control device to an information display device set in the elevator car or the like through a transmission cable. At this time, the information display device side infers the next data which should be displayed in synchronization with an operation of the elevator car. As a result, even if data transfer from the elevator control device is delayed at the time of a high-speed operation, the inferred data can be used to display an operating state of the elevator car without a sense of discomfort.

Abstract: An elevator system (20) includes wireless communicating portions (40, 42) that communicate with each other to provide elevator cab (22) position information within a hoistway (24). In one example, a first communicating portion (40) is supported on the elevator cab (22) that generates a radio frequency trigger signal (58) that is received by a second communicating portion (42) at a selected position along the hoistway (24). The second communicating portion (42) responsively generates an ultrasound signal (64) that is received by the first communicating portion (40). A characteristic of the received locating signal, such as the timing between the trigger signal and the receipt of the locating signal, provides position information regarding the cab within the hoistway.

Abstract: A display system for an elevator includes: a speed detecting device that detects speed of an elevator car; a position detecting device that detects position of the car; an operation control system that outputs speed information, stop floor information, and car position information based on a speed detection signal and a position detection signal; and a display device that displays floor names using a display control device based on the speed information, the stop floor information, and the car position information. The floor names are displayed on a display unit in a continuous manner on a circumference of a predetermined shape, so that display positions of the continuously displayed floor names are moved on the circumference of the predetermined shape in proportion to moving speed of the car.

Abstract: Apparatus for determining the position of an elevator car in an elevator shaft includes a resistance wire installed vertically in the elevator shaft, the wire having a first end supplied with an operating voltage and a second end supplied with a reference voltage; a voltage tap installed on the elevator car, the voltage tap having a contact which rides on the resistance wire between the ends; and a position sensing unit connected to the voltage tap by a measuring line.

Abstract: A lift system for effecting a vertical parallel movement of a platform relative to a base, in particular for moving a sample changer platform of a sample changer in a weighing system, has at least three substantially identical and mutually interchangeable mechanical lift units supporting the platform. The lift units occupy an at least triangular flexible layout on the base. The lift system is equipped with a drive system that includes a transmission device and a drive element, wherein the transmission device connects the lift units among each other and to the drive element. The arrangement produces a simultaneous vertical movement of the lift units with the platform always staying aligned in a plane that is substantially orthogonal to the gravity force.

Abstract: Position transmitting equipment for ascertaining the position of a rail-guided elevator car includes a code carrier, which is arranged over the car travel path in fixed location on a guide rail with code marks of different permeability. A permanently precise reading of the coding is ensured by the fact that the code carrier is fixedly connected with a non-magnetic cover externally covering the code marks. The code carrier together with the outwardly facing non-magnetic cover are inserted into a receiving groove of the car guide rail, whereby a simple and reliable mounting is achieved and, in addition, temperature-dependent differences in expansion between the code carrier and the guide rail are avoided.

Abstract: Equipment for determining a position of an elevator car movable along a guide flange of a guide rail in an elevator installation with a code carrier extending in a travel direction along a length of the guide rail in a groove includes a mount attached to the elevator car, a code reading sensor system attached to the mount, and a plurality of guide rollers rotatably attached to the mount and rolling on the guide flange to maintain the code reading sensor system at a predetermined spacing from the code carrier along two axes.

Abstract: Equipment for determining a position of an elevator car movable along a guide flange of a guide rail in an elevator installation with a code carrier extending in a travel direction along a length of the guide rail in a groove includes a mount attached to the elevator car, a code reading sensor system attached to the mount, and a plurality of guide rollers rotatably attached to the mount and rolling on the guide flange to maintain the code reading sensor system at a predetermined spacing from the code carrier along two axes.

Abstract: A method and a device for determining the state of a rail stretch utilize a receiver that is moved along the rail stretch to receive radio signals transmitted by at least three transmitters mounted in the elevator shaft. Spacing data is determined from the radio signals and is compared by an evaluating unit with reference data of the spacing to generate a result with respect to the state of the rail stretch. The positions of rail fastenings, connecting straps and shaft doors can be detected by additional sensors also moved along the rail stretch and are represented in a correction protocol to permit an efficient adjusting of the rail stretch.

Abstract: A position detecting device for detecting the position of an object (12) movable along a predetermined path of movement, comprising a signal transmission medium (13) extending along the path of movement, a signal generator (15) movable together with said movable object (12), by means of which a signal can be coupled into the signal transmission medium (13), at least one signal receiver (29, 33) at an extraction location in an end portion of said path of movement, a signal propagation time measuring means (35, 37) adapted to determine the signal propagation time between coupling location and extraction location (45), wherein the signal generator (15) is designed to deliver a periodically repeating signal pulse sequence (FIG.

Abstract: An elevator system includes an elevator car having a car door, a drive unit for moving the elevator car along an elevator shaft wall provided with shaft doors and a controller for controlling movement of the elevator car along the elevator shaft wall. A separate fault detecting device is mounted in a region of each of the shaft doors and in a region of the car door for generating fault information to controller. A status detecting unit generates to the controller status information about a position and a speed of the elevator car. In the case of a fault in the region of one of the shaft doors, the controller permits operation of the elevator car between those floors that can be reached by the elevator car without having to pass the floor at the shaft door where the fault has occurred.

Abstract: A position sensing system, specifically for elevators, comprising at least one sensor which is able to move relative to a transducer for the sensor. According to the invention, a scale is provided as a transducer, to which scale a code (11-15, 19) detectable by the sensor is applied by which the position of the sensor relative to the scale is able to be measured. As a result, it is possible to detect the absolute height of the elevator car, with the result that, depending on the code, a high level of precision may be achieved. In addition, the position sensing system may be employed for automated start-up operation, and the data measured may be utilized both for the control equipment and to meet safety requirements.

Abstract: A process for monitoring load conditions on a lifting machine having a rated load moment includes determining an actual load moment of the lifting machine due a weighted load. The actual load moment may be determined by measuring a tilt pressure within a hydraulic tilt cylinder of the lifting machine, and then calculating the actual load moment from the tilt pressure within the hydraulic tilt cylinder. The location of a center of gravity of the weighted load is also determined by measuring a lift pressure within a hydraulic lift cylinder of the lifting machine, and then calculating the weight of the weighted load from the lift pressure. Once the weight is determined, the location of the center of gravity of the weighted load may be found using the actual load moment and the calculated weight.