Abnormality detection system and elevator system

Abstract

Provided is an abnormality detection system capable of detecting an abnormality of an elevator caused by an opening / closing operation of a car door without being linked with a rotation operation of a door motor. An abnormality detection system (50) is provided with: a signal device (20) that outputs a signal (B) corresponding to the opening / closing operation of a car door (9); a signal device (21) that outputs a signal (C) corresponding to the rotational operation of the door motor (13); and an abnormality detection device (22). The abnormality detection device (22) is provided with: a determination unit (24) that determines whether there is an abnormality in the elevator on the basis of the change in the signal B and the change in the signal C; and a transmission unit (25) that transmits a result determined by the determination unit (24) to a monitoring device (26) that monitors the elevator.

Description

Technical Field

[0001] The invention relates to an abnormality detection system and an elevator system. Background Art

[0002] Patent document 1 discloses an elevator operation state diagnosis system. The elevator operation state diagnosis system described in Patent document 1 has an acceleration sensor, a current sensor, and an elevator operation state diagnosis device. The acceleration sensor detects the travel movement of the car. The current sensor detects the current flowing through the door motor that opens and closes the car door. The elevator operation state diagnosis device determines the elevator operation state based on the travel movement of the car and the rotation movement of the door motor.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-147424 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, the elevator operation state diagnosis system described in Patent Document 1 determines the state of the car door based on the current flowing through the door motor, and cannot detect an abnormality of the elevator caused by the car door opening and closing without interlocking with the rotation of the door motor.

[0008] The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide an abnormality detection system capable of detecting an abnormality of an elevator caused by the opening and closing operation of a car door not linked to the rotation operation of a door motor.

[0009] Means for solving problems

[0010] The abnormality detection system of the present invention is used for an elevator, wherein the elevator has a car, the car has a first door motor and a first car door, and the car is provided with a first car door opened and closed by the first door motor. The abnormality detection system comprises: a first signal device, which outputs a first signal corresponding to the opening and closing action of the first car door; a second signal device, which outputs a second signal corresponding to the rotation action of the first door motor; and an abnormality detection device. The abnormality detection device comprises: a determination unit, which determines whether there is an abnormality in the elevator based on changes in the first signal and changes in the second signal; and a sending unit, which sends the result determined by the determination unit to a monitoring device that monitors the elevator.

[0011] In addition, the elevator system of the present invention comprises: an elevator having a car provided with a first car door opened and closed by a first door motor; and an abnormality detection system. The abnormality detection system comprises: a first signal device; a second signal device; and an abnormality detection device. The first signal device outputs a first signal corresponding to the opening and closing action of the first car door. The second signal device outputs a second signal corresponding to the rotation action of the first door motor. The abnormality detection device comprises: a determination unit that determines whether there is an abnormality in the elevator based on changes in the first signal and changes in the second signal; and a sending unit that sends the result determined by the determination unit to a monitoring device that monitors the elevator.

[0012] Effects of the Invention

[0013] According to the present invention, the abnormality detection system has: a first signal device that outputs a first signal corresponding to the opening and closing action of the car door; a second signal device that outputs a second signal corresponding to the rotation action of the first door motor; and an abnormality detection device that has a determination unit that determines whether there is an abnormality in the elevator based on changes in the first signal and changes in the second signal. Therefore, it is possible to detect an abnormality of the elevator caused by the car door opening and closing action not linked to the rotation action of the door motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing an example of a building to which the abnormality detection system in Embodiment 1 is applied.

[0015] Figure 2 This is a front view of a car in which the abnormality detection system in the first embodiment is installed.

[0016] Figure 3 This is a diagram for explaining the function of the abnormality detection system in the first embodiment.

[0017] Figure 4 This is a hardware configuration diagram of the abnormality detection system in Implementation Example 1.

[0018] Figure 5 This is a flowchart for explaining an overview of the operation of the abnormality detection system in the second embodiment.

[0019] Figure 6 This is a flowchart for explaining an overview of the operation of the abnormality detection system in the third embodiment.

[0020] Figure 7 This is a flowchart for explaining an overview of boarding determination based on the traveling motion of the car and the opening and closing motion of the car door in the fourth embodiment.

[0021] Figure 8 This is a flowchart for explaining the outline of the boarding determination based on vibration detection in the fourth embodiment.

[0022] Fig. 9 This is a front view of a car in which the abnormality detection system in the fifth embodiment is installed.

[0023] Fig.10 This is a diagram showing an example of a building to which the abnormality detection system in the sixth embodiment is applied.

[0024] Fig.11 This is a rear view of a car provided with the abnormality detection system in the sixth embodiment. DETAILED DESCRIPTION

[0025] The mode for implementing the present invention will be described with reference to the accompanying drawings. In addition, in each figure, the same reference numerals are given to the same or corresponding parts. The repeated description of the parts is appropriately simplified or omitted.

[0026] Implementation Method 1

[0027] Figure 1 This is a diagram showing an example of a building to which the abnormality detection system in Embodiment 1 is applied.

[0028] The elevator includes a car 1, a traction machine 2, a main rope 3, a counterweight 4, and a control device 5. A hoistway 6 passes through each floor of a building. A machine room 7 is provided above the hoistway 6. A landing 8 is provided on each floor of the building.

[0029] The car 1 is suspended from one side of the main rope 3. The main rope 3 is wound around the traction machine 2. The traction machine 2 moves the main rope 3 in the length direction. As a result, the car 1 is raised and lowered inside the hoistway 6. The counterweight 4 is suspended from the other side of the main rope 3. The counterweight 4 is raised and lowered in the opposite direction to the car 1.

[0030] The hoisting machine 2 and the control device 5 are installed in a machine room 7. The control device 5 is electrically connected to the hoisting machine 2. The control device 5 is electrically connected to the equipment of the car 1. The control device 5 controls the entire elevator. The hoisting machine 2 is controlled by the control device 5.

[0031] The car 1 is in a rectangular parallelepiped shape. An entrance and exit are formed in the car 1. The car 1 has a pair of car doors 9. The car doors 9 are provided at the entrance and exit of the car 1. A landing door 10 is provided at the landing 8 of each floor. The car door 9 and the landing door 10 are opposed to each other.

[0032] In addition, the car 1 can also be applied to an elevator without a machine room 7 . In this case, the traction machine 2 and the control device 5 are installed at the lower part or the upper part of the hoistway 6 .

[0033] Next, use Figure 2 The configuration of the abnormality detection system in the first embodiment will be described.

[0034] Figure 2This is a front view of the car 1 provided with the abnormality detection system in the first embodiment. Figure 2 This is a diagram showing the car 1 as viewed from the landing 8 side.

[0035] The abnormality detection system 50 is used for an elevator.

[0036] like Figure 2 As shown, the car 1 also has a car door track 11, a sill 12, a door motor 13, a car door linkage mechanism 14 and a car ceiling 15. The car door 9 opens and closes the entrance and exit of the car 1.

[0037] The pair of car doors 9 are double-opening type. One of the pair of car doors 9 is arranged on one side of the entrance and exit of the car 1. The other of the pair of car doors 9 is arranged on the other side of the entrance and exit of the car 1. Figure 1 In the embodiment, a pair of car doors 9 are fully closed. Each of the pair of car doors 9 has a connecting portion 16. The connecting portion 16 is provided in a pair. The connecting portion 16 is provided at an upper portion of the car door 9.

[0038] The car door rail 11 is provided above the entrance and exit of the car 1. The car door rail 11 is provided horizontally. The car door 9 is suspended from the car door rail 11. The movement of the upper part of the car door 9 is guided by the car door rail 11. The car ceiling 15 is provided on the upper part of the car 1. The lower surface of the car ceiling 15 forms the ceiling surface of the car 1.

[0039] The sill 12 is provided below the entrance and exit of the car 1. The movement of the lower portion of the car door 9 is guided by the sill 12. The car door 9 opens and closes along the car door rail 11 and the sill 12.

[0040] The door motor 13 is disposed above the car ceiling 15. The door motor 13 may also be disposed above one end of the car door rail 11. The door motor 13 is electrically connected to the control device 5. The door motor 13 is controlled by the control device 5. The door motor 13 performs a rotational action to rotate the rotating shaft under the control of the control device 5. The door motor 13 generates a driving force to open and close the car door 9 through the rotational action. The car door 9 is opened and closed by the rotational action of the door motor 13.

[0041] The car door interlocking mechanism 14 is connected to the door motor 13. The car door interlocking mechanism 14 is connected to the connecting portion 16. The car door interlocking mechanism 14 is driven by the door motor 13, thereby opening and closing the car door 9.

[0042] The car door linkage mechanism 14 may also include, for example, a pair of pulleys 17 and a belt 18. One of the pair of pulleys 17 is provided above one end of the car door rail 11. The other of the pair of pulleys 17 is provided above the other end of the car door rail 11. The belt 18 is wound around the pair of pulleys 17. The belt 18 is connected to a pair of connecting portions 16.

[0043] One of the pair of pulleys 17 rotates following the rotation of the rotating shaft of the door motor 13. The belt 18 circulates following the rotation of one of the pair of pulleys 17. The pair of connecting parts 16 moves following the circulation of the belt 18. Thus, the car door 9 is opened and closed by the door motor 13.

[0044] The abnormality detection system 50 includes a signaling device 19 , a signaling device 20 , a signaling device 21 , and an abnormality detection device 22 .

[0045] The signal device 19 is connected to the abnormality detection device 22. The signal device 19 outputs a signal A corresponding to the travel action of the car 1. The signal device 19 detects the travel actions of the car 1, such as rising, falling and stopping. The signal device 19 outputs the detected travel action of the car 1 as a signal A. The signal device 19 sends the signal A to the abnormality detection device 22. The signal device 19 may also be an accelerometer. The signal A may also be a signal indicating the acceleration of the car 1. The signal A may also be a signal indicating the position of the car 1. The signal device 19 only needs to obtain information corresponding to the acceleration of the car 1. Thus, the signal device 19 can also detect the travel speed of the car 1. In this case, the acceleration of the car 1 can be obtained by differentiating the travel speed of the car 1.

[0046] The signal device 19 may be installed above the car ceiling 15. The signal device 19 may be installed at any position as long as it can detect the running motion of the car 1.

[0047] The signal device 20 is connected to the abnormality detection device 22. The signal device 20 outputs a signal B corresponding to the opening and closing action of the car door 9. The signal device 20 detects the opening and closing actions of the car door 9, such as the opening action, the closing action and the stopping action. The signal device 20 outputs the detected opening and closing action of the car door 9 as a signal B. The signal device 20 sends the signal B to the abnormality detection device 22. The signal device 20 may also be an accelerometer. Signal B may also be a signal indicating the acceleration of the car door 9. Signal A may also be a signal indicating the position of the car 1. The signal device 20 may obtain information corresponding to the acceleration of the car door 9. Thus, the signal device 20 may also detect the opening and closing speed of the car door 9. In this case, the acceleration of the car door 9 can be obtained by differentiating the opening and closing speed of the car door 9.

[0048] The signaling device 20 may be provided on one or the other of the pair of car doors 9 .

[0049] The signal device 21 is connected to the abnormality detection device 22. The signal device 21 outputs a signal C corresponding to the rotational movement of the door motor 13. The signal device 21 detects the rotational movement of the door motor 13. The signal device 21 outputs the detected rotational movement of the door motor 13 as a signal C. The signal device 21 sends the signal C to the abnormality detection device 22. The signal device 21 may also be an ammeter. The signal C may also be a signal indicating the motor current of the door motor 13. The signal device 21 may also be a device for measuring the motor current instruction from the control device 5.

[0050] The signal device 21 may be provided in the door motor 13. The signal device 21 may be provided in a cable connected to the control device 5.

[0051] The abnormality detection device 22 may also be arranged above the car ceiling 15. The abnormality detection device 22 may be arranged at any position. The abnormality detection device 22 is a device for processing the signal A, the signal B, and the signal C. The abnormality detection device 22 may also be a PC installed with dedicated software capable of making abnormality determinations. The determination conditions for making various abnormality determinations are embedded in the dedicated software installed in the abnormality detection device 22.

[0052] Figure 3 This is a diagram for explaining the function of the abnormality detection system 50 in the first embodiment.

[0053] The abnormality detection device 22 includes a receiving unit 23 , a determining unit 24 , and a transmitting unit 25 .

[0054] The receiving unit 23 receives a signal A from the signal device 19 . The receiving unit 23 receives a signal B from the signal device 20 . The receiving unit 23 receives a signal C from the signal device 21 .

[0055] The determination unit 24 may also determine whether there is an abnormality in the travel action of the car 1 according to the change of signal A. The determination unit 24 may also determine whether there is an abnormality in the elevator according to the change of signal B and the change of signal C. The determination unit 24 may also determine whether there is an abnormality in the opening and closing action of the car door 9 according to the change of signal B and the change of signal C.

[0056] The car door 9 is opened and closed in conjunction with the door motor 13. Thus, the change of signal C is linked to the change of signal B. The determination unit 24 may also determine whether the change of signal C is linked to the change of signal B. The determination unit 24 determines that an abnormality exists when the change of signal C is not linked to the change of signal B. The determination unit 24 may also determine whether an abnormality exists in the elevator based on the change of signal A, the change of signal B, and the change of signal C.

[0057] The transmission unit 25 transmits the result determined by the determination unit 24 to the monitoring device 26 that monitors the elevator to which the abnormality detection system 50 is applied. The monitoring device 26 may be a support center. The monitoring device 26 may be installed in a management room of a building in which the abnormality detection system 50 is installed. The transmission unit 25 may transmit the result determined by the determination unit 24 to the monitoring device 26 only when the determination unit 24 determines that an abnormality exists.

[0058] The abnormality detection system 50 does not communicate with each device of the elevator such as the control device 5 .

[0059] In order to detect abnormality of the elevator, an elevator system may be used. The elevator system includes an elevator having a car 1 provided with a car door 9 opened and closed by a door motor 13, and an abnormality detection system 50.

[0060] According to the first embodiment described above, the abnormality detection system 50 has a signal device 20, a signal device 21, and an abnormality detection device 22. The abnormality detection system 50 detects the rotational movement of the door motor 13 and the opening and closing movement of the car door 9. The determination unit 24 of the abnormality detection device 22 determines whether the change of the signal C is linked to the change of the signal B. Thus, it is possible to detect an abnormality in which the car door 9 does not perform an opening and closing movement linked to the rotational movement of the door motor 13 although the door motor 13 is performing a rotational movement for opening and closing the car door 9. Thus, it is possible to detect an abnormality of the elevator caused by the car door 9 not performing an opening and closing movement linked to the rotational movement of the door motor 13.

[0061] In addition, generally speaking, a system that determines an abnormality of an elevator based only on the opening and closing action of the car door 9 cannot determine whether there is a rotation action of the door motor 13. Therefore, as in Patent Document 1, it is impossible to detect an abnormality of the elevator caused by the car door 9 not opening and closing in conjunction with the rotation action of the door motor 13. The abnormality detection system 50 makes a determination based on the change in signal B and the change in signal C, thereby being able to detect an abnormality of the elevator caused by the car door 9 not opening and closing in conjunction with the rotation action of the door motor 13.

[0062] Furthermore, the abnormality detection system 50 further includes a signaling device 19. Thus, an abnormality of the elevator can be determined based on the travel behavior of the car 1. Furthermore, an abnormality of the elevator can be determined based on changes in the signal A, the signal B, and the signal C.

[0063] Furthermore, the transmission unit 25 of the abnormality detection device 22 transmits the result determined by the determination unit 24 to the monitoring device 26. Thereby, an abnormality occurring in the elevator can be notified.

[0064] In addition, generally speaking, when a person is trapped in the car and the elevator cannot be used, the monitoring system installed in the elevator detects an abnormal state. The monitoring system notifies the support center of the abnormality. Thus, a mechanism is established in which a technician is dispatched and the technician restores the elevator. In order to monitor the elevator, a monitoring system dedicated to each manufacturer connected to the elevator is necessary. The management device is a structure corresponding to each model. The abnormality detection system 50 does not communicate with the various devices of the elevator, such as the control device 5. Direct communication between the abnormality detection system 50 and the various devices of the elevator, such as the control device 5, is not required. Thus, the abnormality detection system 50 can be implemented by a structure independent of the elevator. Thus, the elevator can be monitored through a common platform regardless of the manufacturer and model of the elevator.

[0065] Furthermore, the abnormality detection system 50 can monitor the elevator state as long as it has a door motor 13 and a car 1 provided with a car door 9 opened and closed by the door motor 13. Thus, it can be provided not only in elevators for people but also in elevators for small cargoes.

[0066] In addition, an elevator system may be used to detect an abnormality of an elevator. The elevator system includes an elevator having a car 1 provided with a car door 9 opened and closed by a door motor 13, and an abnormality detection system 50. In this case, an abnormality of the elevator caused by the car door 9 opening and closing without being linked to the rotation of the door motor 13 can also be detected.

[0067] In addition, the abnormality detection system 50 has a signal device 19, a signal device 20, a signal device 21, and an abnormality detection device 22. The signal device 19 may also be arranged above the car ceiling 15. The signal device 20 may also be arranged on one or the other of a pair of car doors 9. The signal device 21 may also be arranged on the door motor 13. The abnormality detection device 22 may also be arranged above the car ceiling 15. Thus, a complicated structure is not required, and construction can be easily performed.

[0068] Next, use Figure 4 An example of hardware constituting the abnormality detection system 50 will be described.

[0069] Figure 4 This is a hardware configuration diagram of the abnormality detection system 50 in the first embodiment.

[0070] As hardware resources, the abnormality detection system 50 includes a processing circuit 100 including a processor 100a and a memory 100b. The processing circuit 100 may include a plurality of processors 100a. The processing circuit 100 may include a plurality of memories 100b. The processing circuit 100 may include a dedicated hardware 200. The processing circuit 100 may include a plurality of dedicated hardware 200.

[0071] For example, each function of the abnormality detection system 50 is realized by the processing circuit 100. For example, each function of the abnormality detection system 50 is realized by the processing circuit 100. The processing circuit 100 has a processor 100a and a memory 100b, but does not need to have the dedicated hardware 200.

[0072] When the processing circuit 100 has a processor 100a and a memory 100b, each function of the abnormality detection system 50 is implemented by software, firmware, or a combination of software and firmware. Software and firmware are described as programs. Software and firmware are stored in the memory 100b. The processor 100a reads out and executes the program stored in the memory 100b, thereby implementing each function of the abnormality detection system 50.

[0073] The processor 100a is also called a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. For example, the memory 100b is a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM, a magnetic disk, a floppy disk, an optical disk, a high-density disk, a mini disk, or a DVD.

[0074] In the case where the processing circuit 100 has dedicated hardware 200, the processing circuit 100 is implemented by, for example, a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

[0075] The functions of the abnormality detection system 50 may be partially implemented by the dedicated hardware 200, and the other part may be implemented by software or firmware. For example, the function of sending the determination result to the monitoring device 26 may be implemented by the processing circuit 100 which is the dedicated hardware 200, and the functions other than the function of sending the determination result to the monitoring device 26 may be implemented by the processor 100a reading and executing the program stored in the memory 100b.

[0076] In this way, the processing circuit 100 implements the functions of the abnormality detection system 50 through hardware 200, software, firmware, or a combination thereof.

[0077] Implementation Method 2

[0078] Next, use Figure 5 An overview of the operation of the abnormality detection system 50 in the second embodiment will be described. Figure 5 This is a flowchart for explaining the outline of the operation of the abnormality detection system 50 in Embodiment 2. In addition, the same reference numerals are attached to the same or corresponding parts as those in Embodiment 1, and the description of the parts is omitted.

[0079] The abnormality detection system 50 may also perform abnormality determination as to whether or not the car door interlocking mechanism 14 has an abnormality. Figure 5 This is a flowchart for explaining an outline of the operation of the abnormality detection system 50 when abnormality determination is performed on the car door interlocking mechanism 14 .

[0080] In S101, the receiving unit 23 receives the signal A from the signal device 19. Next, in S102, the determining unit 24 determines whether the car 1 is performing a lifting or lowering movement based on the change in the signal A received by the receiving unit 23. When it is determined that the car 1 is performing a lifting or lowering movement, the determining unit 24 determines "yes" in S102. When it is determined that the car 1 is not performing a lifting or lowering movement, the determining unit 24 determines "no" in S102. When it is determined "no" in S102, in S101, the receiving unit 23 receives the signal A from the signal device 19.

[0081] If the determination result in S102 is "Yes", in S103, the receiving unit 23 receives the signal A from the signal device 19. Next, in S104, the determining unit 24 determines whether the car 1 has stopped based on the change in the signal A received by the receiving unit 23. If the determination result in S104 is "Yes", the determining unit 24 determines in S104 that the car 1 has stopped. If the determination result in S104 is "No", the receiving unit 23 receives the signal A from the signal device 19 in S103.

[0082] When it is determined as "yes" in S104, the receiving unit 23 receives the signal C from the signal device 21 in S105. Next, in S106, the determining unit 24 determines whether the door motor 13 has a rotational movement for opening and closing the car door 9 based on the change in the signal C received by the receiving unit 23. When it is determined that the door motor 13 has a rotational movement for opening and closing the car door 9, the determining unit 24 determines as "yes" in S106. When it is determined that the door motor 13 has no rotational movement for opening and closing the car door 9, the determining unit 24 determines as "no" in S106.

[0083] If the determination result in S106 is "No", in S107, the determination unit 24 determines that the car door 9 does not open or close after the car 1 travels and stops. In addition, in S107, it may be determined that entrapment has occurred. Next, in S112, the transmission unit 25 transmits the result determined by the determination unit 24 in S107 to the monitoring device 26.

[0084] When it is determined as "yes" in S106, the receiving unit 23 receives the signal B from the signal device 20 in S108. Next, in S109, the determining unit 24 determines whether the car door 9 has an opening and closing movement linked to the rotational movement of the door motor 13 based on the change of the signal B received by the receiving unit 23. When it is determined that the car door 9 has an opening and closing movement linked to the rotational movement of the door motor 13, the determining unit 24 determines as "yes" in S109. When it is determined that the car door 9 has no opening and closing movement linked to the rotational movement of the door motor 13, the determining unit 24 determines as "no" in S109.

[0085] If the determination result in S109 is "NO", in S110, the determination unit 24 determines that there is an abnormality in the car door interlocking mechanism 14. Next, in S112, the transmission unit 25 transmits the result determined by the determination unit 24 in S110 to the monitoring device 26.

[0086] If it is determined as "yes" in S109, the determination unit 24 determines that the elevator is operating normally in S111. Next, in S112, the transmission unit 25 transmits the result determined by the determination unit 24 in S111 to the monitoring device 26.

[0087] In addition, when the abnormality detection system 50 performs the operation of S111, it is not necessary to perform the operation of S112. In this case, the transmission unit 25 may transmit only the determination results of S110 and S107 to the monitoring device 26.

[0088] In addition, regarding the operations of S101 to S104, the determination unit 24 may determine whether or not there is a change in the signal A indicating a series of operations in which the car 1 travels and stops.

[0089] The abnormality detection system 50 may not perform the operations of S101 to S104. In this case, the abnormality detection system 50 may perform the abnormality determination of whether or not the car door interlocking mechanism 14 has an abnormality by performing the operations of S105 to S112.

[0090] According to the second embodiment described above, the determination unit 24 determines whether the door motor 13 has a rotational movement for opening and closing the car door 9 based on the change of the signal C. When the door motor 13 has a rotational movement for opening and closing the car door 9, the determination unit 24 determines whether the car door 9 has an opening and closing movement based on the change of the signal B. When the car door 9 has no opening and closing movement linked to the rotational movement of the door motor 13, it is determined that there is an abnormality in the car door linkage mechanism 14. In this way, the abnormality determination of the car door linkage mechanism 14 can be performed.

[0091] Furthermore, when the abnormality detection system 50 performs the operation of S111, it is not necessary to perform the operation of S112. In this case, the transmission unit 25 may transmit only the determination results of S110 and S107 to the monitoring device 26. Thus, the monitoring device 26 can be notified only when an abnormality occurs in the elevator.

[0092] In addition, the abnormality detection system 50 may not perform the actions of S101 to S104. In this case, the abnormality detection system 50 may perform the abnormality determination of whether there is an abnormality in the car door linkage mechanism 14 by performing the actions of S105 to S112. Thus, the determination unit 24 can determine whether there is an abnormality in the car door linkage mechanism 14 based on the changes in the two signals, signal B and signal C.

[0093] Furthermore, the abnormality detection system 50 determines the abnormality of the car door interlocking mechanism 14 based on the change of the signal A, the change of the signal B, and the change of the signal C. Since the abnormality determination can be performed using three signals, complicated processing is not required.

[0094] Implementation 3

[0095] Next, use Figure 6 An overview of the operation of the abnormality detection system 50 in the third embodiment will be described. Figure 6 This is a flowchart for explaining the outline of the operation of the abnormality detection system 50 in Embodiment 3. In addition, the same reference numerals are given to the same or corresponding parts as those in Embodiments 1 and 2, and the description of these parts is omitted.

[0096] The abnormality detection system 50 may also perform a entrapment determination to determine whether entrapment has occurred in the car 1 . Figure 6 This is a flowchart for explaining an outline of the operation of the abnormality detection system 50 when performing a entrapment determination of the car 1 .

[0097] The operations of S201 to S206 are the same as the operations of S101 to S106 described in Embodiment 2. When the determination in S206 is "No", the determination unit 24 determines in S207 that the car 1 is trapped. Next, in S212, the transmission unit 25 transmits the result determined by the determination unit 24 in S207 to the monitoring device 26.

[0098] If the determination result in S206 is "yes", the operations in S208 to S209 are performed. The operations in S208 to S209 are the same as the operations in S108 to S109 described in Embodiment 2. If the determination result in S209 is "no", the determination unit 24 determines in S210 that the car 1 is trapped. Next, in S212, the transmission unit 25 transmits the result determined by the determination unit 24 in S210 to the monitoring device 26.

[0099] If it is determined as "yes" in S209, the determination unit 24 determines that the elevator is operating normally in S211. Next, in S212, the transmission unit 25 transmits the result determined by the determination unit 24 in S211 to the monitoring device 26.

[0100] In addition, when the abnormality detection system 50 performs the operation of S211, it is not necessary to perform the operation of S212. In this case, the transmission unit 25 may transmit only the determination results of S210 and S207 to the monitoring device 26.

[0101] According to the third embodiment described above, the determination unit 24 determines whether the car 1 has traveled and stopped based on the change of the signal A. The determination unit 24 determines whether the door motor 13 has a rotational movement for opening and closing the car door 9 based on the change of the signal C. In the case where the door motor 13 has no rotational movement for opening and closing the car door 9, the determination unit 24 determines that the car 1 is trapped. In the case where the door motor 13 has a rotational movement for opening and closing the car door 9, the determination unit 24 determines whether the car door 9 has an opening and closing movement based on the change of the signal B. In the case where the car door 9 has no opening and closing movement linked to the rotational movement of the door motor 13, the determination unit 24 determines that the car 1 is trapped. Thus, a trapped judgment can be made. Thus, even in the case where the car door 9 has no opening and closing movement linked to the rotational movement of the door motor 13, it is possible to detect that the car is trapped.

[0102] Furthermore, when the abnormality detection system 50 performs the operation of S211, it is not necessary to perform the operation of S212. Thus, it is possible to notify the monitoring device 26 only when an abnormality occurs in the elevator.

[0103] Furthermore, the abnormality detection system 50 performs a trapped state determination based on changes in the signal A, the signal B, and the signal C. Since the trapped state determination can be performed using three signals, complicated processing is not required.

[0104] Implementation 4

[0105] Next, use Figure 7 and Figure 8 An outline of the operation of the boarding determination in Embodiment 4 will be described. In addition, the same reference numerals are given to the same or corresponding parts as those in Embodiments 1 to 3, and the description of such parts will be omitted.

[0106] When a person does not board the car 1 after getting on or off the car 1, the car 1 may automatically move to a predetermined floor. The trapped judgment described in the third embodiment may be performed when a person is boarding the car 1. Thus, the abnormality detection system 50 may also perform the boarding judgment, and start the trapped judgment when it is determined that a person is boarding the car 1.

[0107] The action of taking the elevator can also be performed using signal A, signal B and signal C. Figure 7 This is a flowchart for explaining the outline of boarding determination based on the running operation of the car 1 and the opening and closing operation of the car door 9 in the fourth embodiment.

[0108] The operations of S301 to S306 are the same as the operations of S101 to S106 described in Embodiment 2. When the determination in S306 is "NO", in S307, the determination unit 24 determines that the car 1 has moved to a predetermined floor. After S307, the abnormality detection system 50 may terminate the operation.

[0109] If it is determined as "yes" in S306, the actions of S308 to S309 are performed. The actions of S308 to S309 are the same as the actions of S108 to S109 described in Embodiment 2. If it is determined as "no" in S309, the determination unit 24 determines in S310 that there is an abnormality in the car door linkage mechanism 14. Then, in S313, the transmission unit 25 transmits the result determined by the determination unit 24 in S310 to the monitoring device 26.

[0110] If it is determined as "YES" in S309, in S311, the determination unit 24 determines that a person has boarded the car 1. Next, in S312, the abnormality detection system 50 starts the entrapment determination.

[0111] Furthermore, the boarding determination operation may be performed using the signal A. The signal device 19 may detect the vibration of the car 1 when a person boards the car 1. The signal device 19 may detect the vibration of the car 1 based on the acceleration of the car 1. In this case, the signal A is a signal indicating the acceleration. Figure 8 This is a flowchart for explaining the outline of the boarding determination based on vibration detection in the fourth embodiment.

[0112] The action of S401 is the same as the action of S101 described in Embodiment 2. Following S401, in S402, the determination unit 24 determines whether there is vibration of a person riding in the car 1 based on the change of the signal A received by the receiving unit 23. When it is determined that there is vibration of a person riding in the car 1, the determination unit 24 determines "yes" in S402. When it is determined that there is no vibration of a person riding in the car 1, the determination unit 24 determines "no" in S402. When it is determined "no" in S402, in S401, the receiving unit 23 receives the signal A from the signal device 19.

[0113] If it is determined as "YES" in S402, in S403, the determination unit 24 determines that a person has boarded the car 1. Next, in S404, the abnormality detection system 50 starts the entrapment determination.

[0114] According to the fourth embodiment described above, when the car door 9 performs an opening and closing action after the car 1 is traveling and stopped, the determination unit 24 determines that a person is riding. In addition, when the car 1 vibrates due to a person riding, the determination unit 24 determines that a person is riding. Thus, it is possible to determine whether a person is riding. Thus, it is possible to prevent the car door 9 from being determined to be not opened and causing a person to be trapped when the car 1 moves to a predetermined floor without a person riding. Therefore, it is possible to accurately start the determination of being trapped.

[0115] Implementation method 5

[0116] Next, use Fig. 9 The installation position of the signal device 20 in the fifth embodiment will be described. Fig. 9 This is a front view of a car 1 provided with an abnormality detection system 50 in Embodiment 5. In addition, the same reference numerals are given to the same or corresponding parts as those in Embodiments 1 to 4, and the description of such parts is omitted.

[0117] The signal device 20 may be provided at any position of the pair of car doors 9. The signal device 20 may be provided at one of the pair of connecting portions 16. It is preferable that the signal device 20 is provided at the car door 9 so as to accurately detect the opening and closing operation of the car door 9.

[0118] The signal device 20 may be provided at the lower part of the car door 9. The signal device 20 may be provided at the car door rail 11. There may be a plurality of signal devices 20. In this case, the signal device 20 may be provided at both the lower part of the car door 9 and the car door rail 11.

[0119] According to the fifth embodiment described above, the signal device 20 can also be provided at any position of the pair of car doors 9. Thus, the signal device 20 can be easily provided.

[0120] Furthermore, the signal device 20 can be provided at the lower portion of the car door 9. This can improve the accuracy of detecting a state in which the opening and closing operation of the car door 9 is abnormal, such as when a foreign object is caught in the sill 12.

[0121] Furthermore, the signaling device 20 can be provided on the car door rail 11. Thus, it is possible to improve the accuracy of detecting a state in which an abnormality occurs in the opening and closing operation of the car door 9, such as when a foreign object is attached to the car door rail 11.

[0122] In addition, there may be a plurality of signaling devices 20. In this case, the signaling device 20 can be installed at both the lower portion of the car door 9 and the car door rail 11. Thus, both abnormalities of the sill 12 and abnormalities of the car door rail 11 can be monitored simultaneously.

[0123] Implementation 6

[0124] Next, use Fig.10 and Fig.11 The installation of the signaling device 20 and the signaling device 21 in the sixth embodiment will be described. Fig.10 This is a diagram showing an example of a building to which the abnormality detection system 50 according to the sixth embodiment is applied. Fig.11 It is a rear view of the car 1 provided with the abnormality detection system 50 in Embodiment 6. In addition, the same reference numerals are attached to the parts which are the same as or correspond to those in Embodiments 1 to 5. The description of such parts will be omitted.

[0125] The abnormality detection system 50 can also be applied to elevators with two-way doors. The side of the car 1 on which the car door 9 is provided is set as the front side. In addition, the side of the car 1 parallel to the surface on which the car door 9 is provided is set as the back side. In the following, for the structural elements of the car 1 provided on the front side, the English letter a is added after the reference number to identify each element. For the structural elements of the car 1 provided on the back side, the English letter b is added after the reference number to identify each element.

[0126] The front side of the car 1 on which the abnormality detection system 50 is installed is Figure 2 The rear side of the car 1 has an entrance and exit similarly to the front side. The car 1 further has a car door 9b. The entrance and exit on the rear side of the car 1 has a car door 9b similarly to the front side.

[0127] At least one of the plurality of landings 8 is provided on the front side. At least one of the plurality of landings is provided on the rear side. The landing door 10 is also provided at the landing 8 provided on the rear side. The car door 9b faces the landing door 10 on the rear side.

[0128] The car 1 also has a car door rail 11b, a sill 12b, a door motor 27, and a car door linkage mechanism 14b. The car door rail 11b, the sill 12b, and the car door linkage mechanism 14b are provided on the back side of the car 1 in the same manner as on the front side. The car door 9b opens and closes along the car door rail 11b and the sill 12b.

[0129] The door motor 27 may be provided above the car ceiling 15. The function of the door motor 27 is the same as that of the front door motor 13. The door motor 27 generates a driving force for opening and closing the car door 9b by rotating. The car door 9b is opened and closed by the rotating action of the door motor 27.

[0130] The car door interlocking mechanism 14b is connected to the door motor 27. The car door interlocking mechanism 14 opens and closes the car door 9b by the driving force generated by the door motor 27. The car door interlocking mechanism 14b is driven by the door motor 27, thereby opening and closing the car door 9b.

[0131] The signal device 20 may also be provided at the car door 9b. In the case of a plurality of signal devices 20, the signal device 20 may also be provided at both the car door 9a and the car door 9b. The signal device 20 provided at the car door 9a detects the opening and closing movements of the car door 9a, such as the door opening movement, the door closing movement, and the stop movement. The signal device 20 provided at the car door 9b detects the opening and closing movements of the car door 9b, such as the door opening movement, the door closing movement, and the stop movement.

[0132] Regarding signal B, the signal output by the signal device 20 provided at the car door 9b is set as signal Bb. The signal device 20 provided at the car door 9b can also be provided at any position of the car door 9b as on the front side. The signal device 20 provided at the car door 9b outputs a signal Bb corresponding to the opening and closing action of the car door 9b.

[0133] The signal device 21 may also be provided at the door motor 27. There may also be two signal devices 21. In this case, one of the two signal devices 21 may also be provided at the door motor 13. The other of the two signal devices 21 may also be provided at the door motor 27. The signal device 21 provided at the door motor 13 detects the rotational movement of the door motor 13. The signal device 21 provided at the door motor 27 detects the rotational movement of the door motor 27. Regarding the signal C, the signal output by the signal device 21 provided at the door motor 27 is set to Cb. The signal device 21 provided at the door motor 27 outputs a signal Cb corresponding to the rotational movement of the door motor 27.

[0134] The determination unit 24 determines whether there is an abnormality in the elevator based on changes in the signal Bb and the signal Cb. The determination unit 24 may also determine whether there is an abnormality in the opening and closing operation of the car door 9b based on changes in the signal Bb and the signal Cb.

[0135] According to the sixth embodiment described above, the signal device 20 may also be provided at the car door 9b on the back side. The signal device 20 may also be provided at both the car door 9a and the car door 9b. The signal device 21 may also be provided at the door motor 27. There may also be two signal devices 21. In this case, one of the two signal devices 21 may also be provided at the door motor 13. The other of the two signal devices 21 may also be provided at the door motor 27. Thus, as with the front side, an abnormality of an elevator including a two-way door on the back side cannot be detected. Thus, monitoring of an elevator with a two-way door is enabled.

[0136] The determination unit 24 determines whether there is an abnormality in the elevator based on the changes in the signal Bb and the signal Cb. The determination unit 24 can also determine whether there is an abnormality in the opening and closing action of the car door 9b based on the changes in the signal Bb and the signal Cb. Thus, the abnormality detection system 50 can detect an abnormality in the elevator caused by the car door 9b opening and closing action not being linked to the rotation action of the door motor 27.

[0137] Industrial Applicability

[0138] As described above, the abnormality detection system and the elevator system of the present invention can be used for abnormality detection of an elevator.

[0139] Description of symbols

[0140] 1: car; 2: traction machine; 3: main rope; 4: counterweight; 5: control device; 6: hoistway; 7: machine room; 8: landing; 9: car door; 10: landing door; 11: car door track; 12: sill; 13: door motor; 14: car door linkage mechanism; 15: car ceiling; 16: connecting part; 17: pulley; 18: belt; 19: signal device; 20: signal device; 21: signal device; 22: abnormality detection device; 23: receiving part; 24: judging part; 25: sending part; 26: monitoring device; 27: door motor; 50: abnormality detection system; 100: processing circuit; 100a: processor; 100b: memory; 200: hardware.

Claims

1. An abnormality detection system for an elevator, the elevator having a car, the car having a first door motor and a first car door, the car being provided with the first car door opened and closed by the first door motor, wherein: The anomaly detection system has: a first signal device, which outputs a first signal corresponding to the opening and closing action of the first car door; a second signal device that outputs a second signal corresponding to the rotational motion of the first door motor; and Anomaly detection device, The abnormality detection device comprises: a determination unit, which determines whether there is an abnormality in the elevator according to changes in the first signal and changes in the second signal; as well as A transmitting unit transmits the result determined by the determining unit to a monitoring device that monitors the elevator.

2. The abnormality detection system according to claim 1, wherein: The elevator has a linkage mechanism, which is driven by the first door motor to open and close the first car door. The determination unit performs abnormality determination for determining whether or not an abnormality exists in the interlocking mechanism based on changes in the first signal and changes in the second signal.

3. The abnormality detection system according to claim 2, wherein: In the abnormality determination, The determination unit determines whether the first door motor has a rotational motion for opening and closing the first car door based on a change in the second signal. When it is determined that the first door motor has a rotational movement for opening and closing the first car door, the determination unit determines, based on a change in the first signal, whether the first car door has an opening and closing movement linked to the rotational movement of the first door motor; The determination unit determines that there is an abnormality in the interlocking mechanism when it is determined that the first car door does not have an opening and closing operation interlocked with the rotation operation of the first door motor.

4. The abnormality detection system according to claim 2 or 3, wherein: The abnormality detection system further includes a third signal device, which outputs a third signal corresponding to the travel action of the car. The determination unit performs the abnormality determination based on a change in the third signal, a change in the first signal, and a change in the second signal.

5. The abnormality detection system according to claim 4, wherein: In the abnormality determination, The determination unit determines whether the car is running and stops after running according to the change of the third signal. When the determination unit determines that the car has stopped after traveling, the determination unit determines whether the first door motor has a rotational motion for opening and closing the first car door based on a change in the second signal. When it is determined that the first door motor has a rotational movement for opening and closing the first car door, the determination unit determines, based on a change in the first signal, whether the first car door has an opening and closing movement linked to the rotational movement of the first door motor; The determination unit determines that there is an abnormality in the interlocking mechanism when it is determined that the first car door does not have an opening and closing operation interlocked with the rotation operation of the first door motor.

6. The abnormality detection system according to claim 1, wherein: The abnormality detection system further includes a third signal device, which outputs a third signal corresponding to the travel action of the car. The determination unit performs a entrapment determination for determining whether entrapment in the car has occurred based on a change in the third signal, a change in the first signal, and a change in the second signal.

7. The abnormality detection system according to claim 6, wherein: In the above-mentioned trapped determination, The determination unit determines whether the car is running and stops after running according to the change of the third signal. When the determination unit determines that the car has stopped after traveling, the determination unit determines whether the first door motor has a rotational motion for opening and closing the first car door based on a change in the second signal. The determination unit determines that entrapment has occurred in the car when it is determined that the first door motor is not performing a rotational operation for opening and closing the first car door. When it is determined that the first door motor has a rotational movement for opening and closing the first car door, the determination unit determines, based on a change in the first signal, whether the first car door has an opening and closing movement linked to the rotational movement of the first door motor; The determination unit determines that entrapment has occurred in the car when it is determined that the first car door does not have an opening and closing operation in conjunction with the rotational operation of the first door motor.

8. The abnormality detection system according to claim 6 or 7, wherein: The determination unit determines whether the car is running and stops after running according to the change of the third signal. The determination unit determines whether the first door motor has a rotational motion for opening and closing the first car door when it is determined that the car has stopped after traveling, When it is determined that the first door motor has a rotational movement for opening and closing the first car door, the determination unit determines, based on a change in the first signal, whether the first car door has an opening and closing movement linked to the rotational movement of the first door motor; The determination unit starts the entrapment determination when determining that the first car door is performing an opening and closing operation in conjunction with the rotation operation of the first door motor.

9. The abnormality detection system according to claim 6 or 7, wherein: The third signal represents the acceleration of the car, The determination unit determines whether the car has vibration caused by a person entering the car according to the change of the third signal, The determination unit starts the entrapment determination when determining that the vibration exists.

10. The abnormality detection system according to any one of claims 1 to 9, wherein: The first signal device can be provided on a car door track that guides the first car door.

11. The abnormality detection system according to any one of claims 1 to 10, wherein: The first signaling device can be disposed at a lower portion of the first car door.

12. The abnormality detection system according to any one of claims 1 to 11, wherein: The abnormality detection system includes a plurality of the first signal devices, and the first signal devices can be installed at both a lower portion of the first car door and a car door rail that guides the first car door.

13. The abnormality detection system according to any one of claims 1 to 12, wherein: The elevator also has a second door motor, The car is provided with a second car door which is opened and closed by the second door motor, The anomaly detection system also has: a fourth signal device that outputs a fourth signal corresponding to the opening and closing action of the second car door; and a fifth signal device that outputs a fifth signal corresponding to the rotational motion of the second door motor, The determination unit determines whether there is an abnormality in the elevator based on changes in the fourth signal and changes in the fifth signal.

14. The abnormality detection system according to any one of claims 1 to 13, wherein: The abnormality detection device does not communicate with the elevator.

15. An elevator system, the elevator system comprising: An elevator having a car provided with a first car door opened and closed by a first door motor; and Anomaly detection systems, The anomaly detection system has: first signal device; Second signal device; as well as Anomaly detection device, The first signal device outputs a first signal corresponding to the opening and closing action of the first car door, The second signal device outputs a second signal corresponding to the rotation action of the first door motor, The abnormality detection device comprises: a determination unit, which determines whether there is an abnormality in the elevator according to changes in the first signal and changes in the second signal; as well as A transmitting unit transmits the result determined by the determining unit to a monitoring device that monitors the elevator.

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