Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/0006—Monitoring devices or performance analysers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/02—Door or gate operation
  • B66B13/14—Control systems or devices
  • B66B13/143—Control systems or devices electrical
  • B66B13/146—Control systems or devices electrical method or algorithm for controlling doors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/02—Door or gate operation
  • B66B13/14—Control systems or devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
  • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
  • B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/0006—Monitoring devices or performance analysers
  • B66B5/0012—Devices monitoring the users of the elevator system

Definitions

• the invention relates to a sensor device for controlling the elevator door of an elevator depending on the detection of the passage to the elevator car and an anteroom in front of the elevator car and a control system.
• the object of the invention is to provide a sensor device and a control system with more convenient features.
• the sensor device according to the invention is a sensor device according to claim 1.
• This sensor system offers the advantage that the elevator doors can be closed more quickly with the early closing signal. This reduces waiting times and allows the elevator to be operated more efficiently.
• the early closing signal only occurs under certain conditions—namely, when it is ensured that no person has been in the immediate vicinity of the elevator door, i.e., in the doorway and the vestibule, for a sufficient period of time beforehand—it is possible to prevent people from being startled by a sudden closing action. Consequently, user comfort can be increased.
• An elevator door is generally a sliding door.
• An elevator door can be a single-leaf or a double-leaf sliding door.
• the sliding door can be solid or telescopic.
• the door movement space is the space covered by the front edge of the elevator door(s) during the closing process.
• Separate detection means that the detection of an object can be assigned to the door movement area or the vestibule area.
• a memory means any means of accessing past information, whereby generally only temporary storage is sufficient to monitor a specific period of time.
• This can be implemented electronically in any form, e.g., via main memory (RAM), a register, but also, for example, a flip-flop circuit or any other circuit capable of temporarily storing information.
• the evaluation device is designed to output an opening signal for opening the elevator doors when an object is detected in the door movement area.
• the evaluation unit is configured to output a conditional closing signal for the conditional closing of the elevator doors when no object is detected in the door's movement area.
• Conditional closing means that The elevator doors should close only after a certain amount of time has elapsed since an opening signal was given. This can have the advantage of preventing the elevator doors from closing prematurely, thus reducing wear and tear. The delay can also prevent passengers from being startled by the doors closing immediately upon entry.
• the evaluation device has a timer and is designed to start the timer when an object is detected in the door movement area and to issue a closing signal to close the elevator doors when no object is detected in the door movement area and at the same time a certain time period of the timer has expired.
• conditional closing signal and the opening signal are inverses of each other, and in particular, one of the two signals is given by the absence of the other signal, and in particular, the conditional closing signal is defined by the absence of the opening signal, or vice versa, and in particular, the opening signal is the high state and the conditional closing signal is the low state on the same signal line.
• conditional closing signal and the early closing signal are different from each other and, in particular, are neither the same and/or inverse to each other and, in particular, are transmitted via different signal lines.
• control system according to the invention is a control system according to claim 7.
• the system is designed to execute successive detection cycles.
• the control system includes a control unit configured to open the elevator doors when an object is detected in the doorway, to start a timer when the doors open, and to close the doors when no object is detected and a specific timer period has elapsed.
• the control unit also includes a memory module configured to temporarily store information on whether an object was detected during a detection cycle and to close the elevator doors when no object is detected.
• the system module is configured to store information indicating that an object was detected during a previous detection cycle, particularly the immediately preceding one.
• the control system according to the invention can include the sensor device according to the invention.
• the door movement space corresponds essentially to the plane between the cabin doors and the shaft doors, and in particular to the detection plane of a conventional light grid.
• the timer duration is 5 seconds.
• the object is a person.
• the detection device is arranged on the door frame and/or surrounded by a housing, particularly together with the evaluation device.
• the detection device comprises a 3D sensor, in particular a TOF 3D sensor, and especially has a sensor matrix, wherein a region of the sensor matrix is located within the door's movement area for detection. and another area of the sensor matrix is assigned to detection in the anteroom area.
• FIG. 1 shows a control system 10 according to the invention, comprising a sensor device 10 and a door control 40 for an elevator.
• the sensor device 20 sends either an opening signal 31 or a conditional closing signal 32 to the door control unit 40.
• the conditional closing signal 32 is triggered by the absence of the opening signal 31. Additionally, the sensor device 20 can send an early closing signal 33 to the door control unit 40.
• the sensor device 20 includes a detection device 21. This is a 3D TOF sensor and consists of a sensor matrix, optics, and IR illumination.
• the detection device is designed to monitor two areas. The first area is the doorway. The second area is the vestibule.
• the sensor device 20 comprises an evaluation device with a first distinguisher 22, a memory 23, a second distinguisher 24 and a third distinguisher 25.
• the sensor device 20 When the elevator car has reached a stopping position and the doors are at least partially open, the sensor device 20, like a film camera, periodically performs detection cycles in which it detects the two rooms and evaluates the detection each time. In each detection cycle, the detection device 21 takes an image of the doorway and the vestibule area.
• the first distinguisher 22 receives the data from the detection device 21 via the data connection 21a, evaluates it, and if an object is detected in the door gap, it outputs an opening signal 31 and writes the detection of an object to memory 23. If no object is detected in the door gap, the second distinguisher 24 evaluates the data from the detection device 21, and if an object is detected in the vestibule area, it outputs a conditional closing signal 32 and writes the detection of an object to memory 23.
• the conditional closing signal 32 is the absence of the opening signal.
• the memory stores the fact of whether an object was detected in the current detection cycle until the next detection cycle. If no object is detected in the anteroom area, the third distinguisher 25 evaluates the memory 23 and also sends the conditional closing signal 32 if the memory does not contain the information that an object was detected in the previous detection run, or sends an early closing signal if the memory contains the information that an object was detected in the previous detection run.
• the door control 40 receives either the opening signal 31, the conditional closing signal 32 or the early closing signal 33 from the sensor device 20.
• the door control 40 receives the opening signal 31 via the connection 31a, then the door control initiates the opening of the elevator door and starts a timer 42.
• a distinguisher 43 evaluates whether a specific duration has elapsed since the start of the timer 42 and outputs a closing signal 44, closing the elevator doors if this specified duration has passed since the start of the timer 42.
• the specified duration is 5 seconds, but can also be longer or shorter.
• Connection 31a for the opening signal 31 and connection 32a for the conditional closing signal 32 share the same signal line.
• the conditional closing signal is the absence of the opening signal on the same signal line.
• the door control unit 40 receives the early closing signal 33 via connection 33a, then the door control unit 40 closes the elevator doors immediately.
• the early closing signal 33 is transmitted via a different signal line than the opening signal 31 and the conditional closing signal 32.

Landscapes

• Engineering & Computer Science (AREA)
• Automation & Control Theory (AREA)
• Elevator Door Apparatuses (AREA)
• Indicating And Signalling Devices For Elevators (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (2)

Family

ID=81327796

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Family Cites Families (2)

• 2022
  • 2022-04-07 ES ES22167239T patent/ES3064038T3/es active Active
  • 2022-04-07 EP EP22167239.7A patent/EP4257530B1/de active Active
• 2023
  • 2023-04-05 US US18/295,950 patent/US20230322524A1/en active Pending
  • 2023-04-06 CN CN202310363683.6A patent/CN116891171A/zh active Pending
  • 2023-04-07 JP JP2023062835A patent/JP2023155215A/ja active Pending

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