Elevator control device and elevator control method
By using magnetic sensors, portable terminals or camera devices in the elevator to identify the information of the operator leaving the shaft, the problem of inaccurate switching of the elevator operation mode is solved, and a safe and reliable switching of the mode is achieved.
Patent Information
- Application Number
- CN202410798866.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-21
- Filing Date
- 2024-06-20
- Publication Date
- 2024-12-24
AI Technical Summary
After the elevator maintenance inspection is completed, it is impossible to accurately determine whether the operator has left the shaft, resulting in the inability to switch the operating mode correctly, affecting safety.
Magnetic sensors, portable terminals or camera devices are used to identify whether the operator leaves the shaft, switch the elevator operation mode through detection information, and switch from the inspection mode to the normal mode.
Ensure accurate switching of elevator operation mode after the operator leaves the shaft, improving safety and reliability.
Smart Images
Figure CN119176470A_ABST
Abstract
Description
Technical Field
[0001] Embodiments of the present invention relate to an elevator control device and an elevator control method. Background Art
[0002] In order to maintain safe operation, elevators have the obligation to perform maintenance and inspection regularly. When performing maintenance and inspection work on elevators, the operator switches the operation mode of the elevator from the normal mode to the inspection mode, and switches from the inspection mode to the normal mode after the maintenance and inspection work is completed. By switching the operation mode in this way, the elevator can be operated in a manner suitable for the inspection work during the inspection work.
[0003] Usually, the operating switch for switching the running mode of the elevator is arranged in the hoistway. Therefore, after the inspection operation is finished, even if the operating switch is operated, it is impossible to correctly identify whether the operator has indeed moved outside the hoistway, and there is a problem that the switching timing of the running mode cannot be properly judged. Summary of the invention
[0004] The problem to be solved by the present invention is to provide an elevator control device and an elevator control method, which can switch the operation mode of the elevator from the inspection mode to the normal mode at an appropriate timing after the inspection work of the elevator is completed.
[0005] The elevator control device of the embodiment has the following mode switching unit: when the operation mode of the elevator is set to the inspection mode, after the operation of switching from the inspection mode to the normal mode is detected in the elevator shaft, when it is recognized that the operator who has completed the inspection work has moved outside the shaft, the operation mode of the elevator is switched to the normal mode.
[0006] According to the above elevator control device, after the inspection work of the elevator is completed, the operation mode of the elevator can be switched from the inspection mode to the normal mode at an appropriate timing. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is an overall diagram showing the configuration of an elevator system using the elevator control device according to the first embodiment.
[0008] Figure 2 This is a diagram showing an example of a worker-only card for transmitting information for detecting that a worker is present at a landing from a magnetic sensor to the elevator control device of the first embodiment.
[0009] Figure 3 This is a flowchart showing the processing executed by the elevator control device according to the first to third embodiments.
[0010] Figure 4It is an overall diagram showing the configuration of an elevator system using an elevator control device according to the second embodiment.
[0011] Figure 5 It is an overall diagram showing the configuration of an elevator system using an elevator control device according to a third embodiment. DETAILED DESCRIPTION
[0012] Hereinafter, as one embodiment of the present invention, an elevator system using an elevator control device that switches the operation mode of an elevator between normal operation of the elevator and inspection work will be described.
[0013] 《First Implementation Mode》
[0014] <Configuration of an elevator system using the elevator control device according to the first embodiment>
[0015] Figure 1 It is an overall diagram showing the configuration of an elevator system 1A using 7A of elevator control devices according to the present embodiment.
[0016] The elevator system 1A includes a hoist 3 installed in a hoistway 2 in a building, a rope 4 wound around the hoist 3, a car 5 suspended at one end of the rope 4, and an elevator control device 7A connected to the car 5 via a tail rope 6. The car 5 has a car door 51 and a car inspection switch 52 installed on the upper part of the car. The car inspection switch 52 is a switch for an operator who performs maintenance inspection to operate so that the operation mode in the elevator control device 7A is switched to the inspection mode when the maintenance work on the upper part of the car 5 is started, and returns to the normal mode when the maintenance work is completed.
[0017] The elevator control device 7A is connected to a door opening and closing sensor 111 of a landing door 11 of a specified floor in a building, for example, the lowest floor, i.e., the 1st floor landing 10A, a pit inspection switch 12 near the landing door 11 in the hoistway 2, and a magnetic sensor 13 installed in the landing 10A, so as to be communicative via wired or wireless means.
[0018] The door opening and closing sensor 111 detects the opening and closing state of the landing door 11. The pit inspection switch 12 is a switch for an operator to operate so as to switch the operation mode in the elevator control device 7A to the inspection mode when starting the maintenance work in the pit at the bottom of the hoistway 2, and return to the normal mode when it is finished. The magnetic sensor 13 outputs detection information when detecting a plurality of magnets arranged in a manner forming a predetermined shape pattern.
[0019] The elevator control device 7A includes a CPU 71A. The CPU 71A is, for example, a CPU (central processing unit) included in a general-purpose microcomputer, and by installing and executing a predetermined elevator control program, one or two or more information processing units described below are configured.
[0020] The CPU 71A includes an operation control unit 711, an information acquisition unit 712A, and a mode switching unit 713A. The operation control unit 711 controls the equipment in the elevator system 1A, such as the hoist 3. The information acquisition unit 712A acquires information output from the car inspection switch 52, the door opening and closing sensor 111, the pit inspection switch 12, and the magnetic sensor 13.
[0021] The mode switching unit 713A switches the operation mode of the operation control unit 711 to the normal mode or the inspection mode based on the information acquired by the information acquisition unit 712A.
[0022] <Operation of Elevator System According to First Embodiment>
[0023] In the present embodiment, an operator performs maintenance and inspection work in the elevator system 1B while holding an operator-specific card for outputting detection information to the magnetic sensor 13 . Figure 2 1 is a diagram showing an example of an operator-only card C. In the operator-only card C, magnets M1, M2, and M3 are arranged so as to form a predetermined shape pattern.
[0024] Figure 3 1 is a flowchart showing the processing performed by the elevator control device 7A when the elevator system 1A of the present embodiment is in operation. When the operator performs maintenance and inspection work in the pit, the operator stops the car 5 at a floor one floor above the lowest floor, opens the landing door 11 at the lowest landing 10A for inspection work, and fixes the open door state with a door stop (not shown). After that, the operator performs an operation for switching the operation mode of the elevator control device 7A from the normal mode to the inspection mode through the pit inspection switch 12. The pit inspection switch 12 outputs information on the operation performed by the operator to the elevator control device 7A.
[0025] In the elevator control device 7A, the information acquisition unit 712A acquires the operation information output from the pit inspection switch 12. Based on the information acquired by the information acquisition unit 712A, the mode switching unit 713A recognizes that the operation of switching the operation mode to the inspection mode has been performed (Yes in S1), and switches the operation mode of the operation control unit 711 to the inspection mode (S2).
[0026] After the operation mode is switched to the inspection mode, the operator descends from the landing 10A through the opened landing door 11 using a ladder or the like into the pit to perform maintenance and inspection work.
[0027] After the maintenance and inspection work in the pit is completed, the operator climbs out of the pit using a ladder or the like, and performs an operation for switching the operation mode of the elevator control device 7A from the inspection mode to the normal mode through the pit inspection switch 12. The pit inspection switch 12 outputs information on the operation performed by the operator to the elevator control device 7A.
[0028] In the elevator control device 7A, the information acquisition unit 712A acquires the operation information output from the pit inspection switch 12. The mode switching unit 713A recognizes that the operation of switching the operation mode to the normal mode has been performed based on the information acquired by the information acquisition unit 712A (Yes in S3).
[0029] After the operator checks the operation of the switch 12 in the pit, he moves to the landing 10A outside the hoistway 2 via the landing door 11. After the operator moves to the landing 10A, he removes the door stop and closes the landing door 11. When the landing door 11 is closed, the door opening and closing sensor 111 detects the door closing, generates door closing detection information and sends it to the elevator control device 7A.
[0030] In the elevator control device 7A, the information acquisition unit 712A acquires the door closing detection information transmitted from the door opening and closing sensor 111. The mode switching unit 713A recognizes that the landing door 11 is closed based on the information acquired by the information acquisition unit 712A (YES in S4).
[0031] Then, the operator swipes the operator card C in a predetermined direction against the magnetic sensor 13. The magnetic sensor 13 detects a plurality of magnets arranged in a predetermined pattern from the swipe operator card C and outputs the detection information to the elevator control device 7A.
[0032] In the elevator control device 7A, the information acquisition unit 712A acquires the detection information output from the magnetic sensor 13. When the information acquisition unit 712A acquires the detection information, the mode switching unit 713A recognizes that the operator has moved to the landing 10A outside the shaft 2 ("Yes" in S5). As a result, the mode switching unit 713A recognizes that the operation mode is switched to the normal mode, the landing door 11 is closed, and the operator has moved to the outside of the shaft 2 and is at the landing 10A, so the operation mode of the operation control unit 711 is switched from the inspection mode to the normal mode (S6). After the operation mode is switched to the normal mode, return to step S1.
[0033] When the operator performs maintenance and inspection work on the upper part of the car 5, the operator opens the landing door 11 at the landing 10A and fixes the open state of the door by means of a door stop (not shown) while the upper part of the car 5 is stopped so that the upper part is close to the floor surface of the landing 10A. Thereafter, the operator stands on the upper part of the car 5 from the landing 10A through the opened landing door 11, and performs an operation for switching the operation mode of the elevator control device 7A from the normal mode to the inspection mode by means of the on-car inspection switch 52. The on-car inspection switch 52 outputs information on the operation performed by the operator to the elevator control device 7A via the tail cable 6.
[0034] In the elevator control device 7A, the information acquisition unit 712A acquires the operation information output from the car inspection switch 52. Based on the information acquired by the information acquisition unit 712A, the mode switching unit 713A recognizes that an operation of switching the operation mode to the inspection mode has been performed ("Yes" in S1), and switches the operation mode of the operation control unit 711 to the inspection mode (S2).
[0035] After the operation mode is switched to the inspection mode, the operator performs maintenance inspection work on the upper portion of the car 5. While the operation mode is set to the inspection mode, for example, the travel speed of the car 5 becomes low.
[0036] After the maintenance inspection work on the car 5 is completed, the operator switches the operation mode of the elevator control device 7A from the inspection mode to the normal mode through the car inspection switch 52. The car inspection switch 52 outputs information on the operation performed by the operator to the elevator control device 7A.
[0037] In the elevator control device 7A, the information acquisition unit 712A acquires the operation information output from the car inspection switch 52. The mode switching unit 713A recognizes that the operation of switching the operation mode to the normal mode has been performed based on the information acquired by the information acquisition unit 712A (Yes in S3).
[0038] After the operator checks the operation of the switch 12 in the pit, he moves to the landing 10A outside the hoistway 2 via the landing door 11. After the operator moves to the landing 10A, he removes the door stop and closes the landing door 11. When the landing door 11 is closed, the door opening and closing sensor 111 detects the door closing, generates door closing detection information and sends it to the elevator control device 7A.
[0039] In the elevator control device 7A, the information acquisition unit 712A acquires the door closing detection information transmitted from the door opening and closing sensor 111. The mode switching unit 713A recognizes that the landing door 11 is closed based on the information acquired by the information acquisition unit 712A (YES in S4).
[0040] Then, the operator swipes the operator card C in a predetermined direction against the magnetic sensor 13. The magnetic sensor 13 detects a plurality of magnets arranged in a predetermined pattern from the swipe operator card C and outputs the detection information to the elevator control device 7A.
[0041] In the elevator control device 7A, the information acquisition unit 712A acquires the detection information output from the magnetic sensor 13. When the information acquisition unit 712A acquires the detection information, the mode switching unit 713A recognizes that the operator has moved to the landing 10A outside the shaft 2 ("Yes" in S5). As a result, the mode switching unit 713A recognizes that the operation mode is switched to the normal mode, the landing door 11 is closed, and the operator has moved to the outside of the shaft 2 and is at the landing 10A, so the operation mode of the operation control unit 711 is switched from the inspection mode to the normal mode (S6). After the operation mode is switched to the normal mode, return to step S1.
[0042] According to the first embodiment described above, after the inspection operation of the elevator is completed, the elevator control device can switch the operation mode of the elevator from the inspection mode to the normal mode when the operator reliably goes out of the shaft using the magnetic sensor, thereby ensuring the safety of the operator. The magnetic sensor uses a dedicated magnetic sensor that forms a specified pattern, thereby switching the operation mode according to the timing when the operator holding the magnetic sensor reliably goes out of the shaft.
[0043] Second Implementation Method
[0044] <Configuration of an elevator system using an elevator control device according to the second embodiment>
[0045] Figure 4 It is an overall diagram showing the configuration of an elevator system 1B using an elevator control device 7B according to the present embodiment.
[0046] The elevator system 1B has the same configuration as the elevator system 1A described in the first embodiment except that it further includes a portable terminal 20 held by an operator and a display medium 14 is provided in the hall 10B instead of the magnetic sensor 13, so detailed description of parts having the same functions will be omitted.
[0047] The display medium 14 is a medium that can be read by the portable terminal 20 held by the operator and displays a two-dimensional code 141 that is display information including identification information of the landing 10B as the installation location.
[0048] The portable terminal 20 is equipped with an application for elevator inspection work, and has a function of reading identification information of the hall 10B from the two-dimensional code 141 of the display medium 14 and a function of wirelessly transmitting the read information to the elevator control device 7B through the application.
[0049] The elevator control device 7B includes a CPU 71B and a wireless communication unit 72. The wireless communication unit 72 receives the identification information of the hall 10B wirelessly transmitted from the portable terminal 20, and sends the identification information to the CPU 71B.
[0050] The information acquisition unit 712B of the CPU 71B acquires identification information of the landing station 10B sent from the upper inspection switch 52, the door opening and closing sensor 111, the pit inspection switch 12, and the wireless communication unit 72. The mode switching unit 713B switches the operation mode of the operation control unit 711 to the normal mode or the inspection mode based on the information acquired by the information acquisition unit 712B.
[0051] <Operation of Elevator System According to Second Embodiment>
[0052] In the present embodiment, an operator carries out maintenance and inspection work in the elevator system 1B while holding the portable terminal 20 .
[0053] In the present embodiment, the processing of steps S1 to S4 executed by the operator when performing maintenance and inspection work in the pit or on the top of the car 5 is the same as that described in the first embodiment, and therefore a detailed description thereof will be omitted.
[0054] When the operator moves from the hoistway 2 to the landing 10B after the maintenance and inspection work, he reads the identification information of the landing 10B from the two-dimensional code 141 of the display medium 14 of the landing 10B through the application of the portable terminal 20. The portable terminal 20 wirelessly transmits the information read by the application to the elevator control device 7B.
[0055] In the elevator control device 7B, the information acquisition unit 712B acquires the identification information sent from the portable terminal 20 via the wireless communication unit 72. When the information acquisition unit 712B acquires the identification information, the mode switching unit 713B recognizes that the operator has moved to the landing 10A outside the shaft 2 ("Yes" in S5). As a result, the mode switching unit 713B recognizes that the operation of switching the operation mode to the normal mode has been performed, and the operator has moved to the outside of the shaft 2 and is at the landing 10B, so the operation mode of the operation control unit 711 is switched from the inspection mode to the normal mode (S6). After the operation mode is switched to the normal mode, return to step S1.
[0056] According to the above second embodiment, after the inspection work of the elevator is completed, the elevator control device can switch the operation mode of the elevator from the inspection mode to the normal mode when it is recognized that the operator has indeed gone out of the shaft using the identification information of the floor station read from the QR code, thereby ensuring the safety of the operator.
[0057] In the second embodiment, the operator's portable terminal 20 may wirelessly transmit the identification information of the landing 10B read from the two-dimensional code 141 by the application to a management device in a maintenance center that remotely manages the elevator system 1B, and transmit the information from the management device to the elevator control device 7B. With such a configuration, the operator's movements can be identified in the management device of the maintenance center.
[0058] In the second embodiment, the display information displayed by the display medium 14 is not limited to a two-dimensional code, and can be other information such as barcode information, text information, image information, etc. as long as the portable terminal 20 can read the display information of the landing station 10A as the installation location.
[0059] 《Third Implementation Mode》
[0060] <Configuration of an elevator system using an elevator control device according to the third embodiment>
[0061] Figure 5 It is an overall diagram showing the configuration of an elevator system 1C using an elevator control device 7C according to the present embodiment.
[0062] The elevator system 1C further includes a camera device 53 provided above the door 51 of the car 5, and has the same configuration as the elevator system 1A described in the first embodiment, so detailed description of parts having the same functions will be omitted.
[0063] When the car door 51 opens at the landing 10C, the camera device 53 captures the area near the landing door 11 of the landing 10C and obtains the identification information of the operator included in the captured information. The camera device 53 transmits the identification information of the operator obtained from the captured information to the elevator control device 7C.
[0064] The elevator control device 7C includes a CPU 71C. An information acquisition unit 712C of the CPU 71C acquires identification information of an operator transmitted from the car inspection switch 52, the door opening / closing sensor 111, the pit inspection switch 12, and the camera device 53. A mode switching unit 713C switches the operation mode of the operation control unit 711 to a normal mode or an inspection mode based on the information acquired by the information acquisition unit 712C.
[0065] <Operation of Elevator System According to Third Embodiment>
[0066] In this embodiment, when performing maintenance and inspection work, the car 5 stops at the landing 10C2 of the floor above the lowest landing 10C1, and the operator enters the shooting target area of the camera device 53 with the car door 51 open. The camera device 53 obtains and stores the identification information of the operator included in the camera information. The identification information of the operator is information obtained based on the feature information of the operator's face and used to distinguish from other people.
[0067] After that, the operator goes down to the landing 10C1 one floor below by stairs or the like, and performs maintenance and inspection work in the pit and on the top of the car 5. The processing of steps S1 to S4 performed by the operator when performing maintenance and inspection work in the pit or on the top of the car 5 is the same as that described in the first embodiment, and therefore detailed description is omitted.
[0068] When the operator moves from the shaft 2 to the landing 10C1 after the maintenance and inspection work, he moves to the landing 10C2 one floor above by stairs, etc., and with the car door 51 open, the operator enters the shooting target area of the camera device 53. The camera device 53 obtains the identification information of the operator included in the camera information, and determines whether the operator in the camera information is the operator corresponding to the identification information maintained before the maintenance and inspection work.
[0069] When the camera device 53 determines that the worker in the imaged information is the worker corresponding to the identification information stored before the maintenance and inspection work, it generates worker detection information and transmits it to the elevator control device 7C.
[0070] In the elevator control device 7C, the information acquisition unit 712C acquires the operator detection information sent from the camera device 53. When the information acquisition unit 712C acquires the operator detection information, the mode switching unit 713C recognizes that the operator has moved to the landing 10C2 outside the shaft 2 ("Yes" in S5). As a result, the mode switching unit 713C recognizes that the operation mode is switched to the normal mode, and the operator has moved to the outside of the shaft 2 and is at the landing 10C2, so the operation mode of the operation control unit 711 is switched to the normal mode (S6). After the operation mode is switched to the normal mode, return to step S1.
[0071] According to the third embodiment described above, after the inspection work of the elevator is completed, the elevator control device can switch the operation mode of the elevator from the inspection mode to the normal mode by using the information detected by the camera device installed on the car door to identify the timing when the operator has indeed gone out of the shaft, thereby ensuring the safety of the operator.
[0072] In the first to third embodiments described above, the information used by the elevator control device 7A, 7B or 7C in the mode switching process to identify that the operator has moved to a landing outside the shaft 2 is not limited to the detection information based on the magnetic sensor, the read information of the display medium, and the operator detection information based on the camera device 53 of the car 5 as described above. As long as it is information that can detect that the operator is in a position outside the shaft 2, it can also be other information. For example, the elevator control device 7A, 7B or 7C may be, when input information of information only recognized by the operator, identification information read from the IC card carried by the operator, biometric authentication information of the operator, etc., is obtained through a device such as a landing outside the shaft 2, it is possible to recognize that the operator has moved to a landing outside the shaft 2 and switch the operation mode of the elevator.
[0073] Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and spirit of the invention, and are included in the invention described in the claims and their equivalents.
Claims
1. An elevator control device, comprising: The mode switching unit switches the operation mode of the elevator to the normal mode when the operation mode of the elevator is set to the inspection mode, after detecting an operation of switching from the inspection mode to the normal mode in the elevator shaft, and when recognizing that the operator who has completed the inspection work has moved outside the shaft.
2. The elevator control device according to claim 1, wherein: The mode switching unit is configured to recognize that, when a predetermined operation is performed by a predetermined operator at the elevator landing, the operator has moved out of the hoistway after completing the inspection work.
3. The elevator control device according to claim 1, wherein: The mode switching unit is configured to obtain and maintain information for identifying an operator based on video information captured by a camera device installed in the elevator car after the operation mode of the elevator is set to the inspection mode and before the inspection operation. After the inspection operation, when an operator corresponding to the maintained information is detected based on the video information captured by the camera device, it is recognized that the operator who has completed the inspection operation has moved outside the shaft.
4. The elevator control device according to claim 1, wherein: The mode switching unit switches the operation mode of the elevator to the normal mode after detecting that an operation has been performed to switch from the inspection mode to the normal mode, when it is detected that the floor station door opened for the inspection work has been closed, and when it is recognized that the operator who has completed the inspection work has moved outside the shaft.
5. An elevator control method, wherein: By the elevator control device, when the operation mode of the elevator is set to the inspection mode, after the operation of switching from the inspection mode to the normal mode is detected in the elevator shaft, when it is recognized that the operator who has completed the inspection work has moved outside the shaft, the operation mode of the elevator is switched to the normal mode.