Method for testing operation of governor system for elevator and testing device for operation

Abstract

Disclosed is a method of testing the operation of a governor system that operates an emergency stop device based on an image within a hoistway, while the car is stopped. The method of testing the operation of the elevator governor system is a method of testing the operation of a governor system that operates an emergency stop device (2) if an overspeed condition of the car is detected based on an image of the surface of a guide rail (4) obtained by an image sensor (3) provided in the car (1), by obtaining a dynamic image of a pattern that simulates the surface state of the guide rail and flows in the hoistway direction of the car.

Description

Technical Field

[0001] This invention relates to a motion test method and a motion test apparatus for testing the operation of an elevator speed controller system that activates an emergency stop device for an elevator. Background Technology

[0002] In an elevator system, a speed controller and an emergency stop device are included to continuously monitor the car's ascending and descending speed and to ensure an emergency stop if the car falls into a given overspeed state. A speed controller rope, which is connected to the car, is wound around a pulley in the speed controller. As the car ascends or descends, the speed controller rope moves along with the car, causing the pulley to rotate. The rotation of the pulley causes a pendulum mounted on it to swing due to centrifugal force. If the car becomes overspeed-prone and the pendulum's swing increases, the speed controller rope's gripping mechanism is activated, restricting the rope's movement. This triggers the emergency stop device on the car side, bringing the car to an emergency stop.

[0003] In such elevator systems, the use of long governor ropes within the elevator shaft makes space-saving and cost-effectiveness difficult to achieve. Furthermore, the governor ropes are prone to interference with other structures within the elevator shaft when they swing.

[0004] In contrast, as a prior art, the technology described in Patent Document 1 is known to operate the emergency stop device based on the speed of the car without using a speed governor like the one described above.

[0005] In this prior art, if the monitoring device determines that there is an abnormality in the operating condition based on the speed information from the car speed detection unit in the detection unit that detects the position and speed of the car, it outputs an operating signal to the emergency stop device. Furthermore, Patent Document 1 (Figure 15) describes a moving body position / speed detection device that detects the speed of the moving body based on images captured by a camera mounted on the moving body. In the case where the moving body is an elevator, images are taken of the walls and columns of the elevator shaft.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: International Publication No. 2006 / 073015 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] In mechanical speed controller operation tests, the speed controller rope is removed from the pulley, and the pulley is rotated via a drive device, allowing the operation test to be performed with the car stopped. However, in speed controller systems that rely on camera images to detect the car's speed, it is difficult to stop the car for operation tests.

[0011] Therefore, the present invention provides a method and apparatus for testing the operation of an elevator speed controller system, which can test the operation of the speed controller system that activates the emergency stop device based on images within the elevator shaft while the car is stopped.

[0012] Methods for solving problems

[0013] To address the aforementioned issues, the method for testing the operation of an elevator speed controller system is a method for testing the operation of a speed controller system that activates an emergency stop device if an overspeed condition of the car is detected based on an image of the guide rail surface obtained by an image sensor located in the car. The image sensor obtains a dynamic image of a pattern that simulates the surface condition of the guide rail and flows along the car's vertical direction.

[0014] To address the aforementioned issues, the elevator speed controller system operation test apparatus of the present invention tests the operation of a speed controller system that activates an emergency stop device if an overspeed condition of the car is detected based on an image of the guide rail surface obtained by an image sensor installed in the car. The apparatus comprises: a test object displaying a dynamic image of a pattern simulating the surface condition of the guide rail and flowing along the car's vertical direction, the dynamic image being obtained by an image sensor.

[0015] The effects of the invention

[0016] According to the present invention, the operation of a speed governor system that activates an emergency stop device based on an image from a guide rail can be tested while the car is stopped.

[0017] Other issues, structures, and effects not mentioned above will be clarified through the following description of the implementation methods. Attached Figure Description

[0018] Figure 1 This is a schematic structural diagram of the elevator device in an embodiment.

[0019] Figure 2 This is a top view showing the structure of the electric actuator in the embodiment.

[0020] Figure 3 It indicates the guide rail ( Figure 1 A schematic diagram of an example of an image of the exposed surface.

[0021] Figure 4 This is a block diagram illustrating the functional structure of the action test device in the embodiment.

[0022] Figure 5 This describes the appearance of the motion test apparatus for the cordless speed controller system in the embodiment. Figure 1 The A-direction view and the main view.

[0023] Figure 6 This is a schematic diagram of an example of a pattern representing the surface condition of a simulated guide rail.

[0024] Figure 7 This is a flowchart illustrating the operational test process of the cordless speed controller system in the embodiment. Detailed Implementation

[0025] Hereinafter, embodiments of the present invention will be described using the accompanying drawings. Furthermore, in the figures, components with the same reference numerals represent the same components or components having similar functions.

[0026] Figure 1 This is a schematic structural diagram of an elevator device according to an embodiment of the present invention.

[0027] like Figure 1 As shown, the elevator unit includes a car 1, an image sensor 3, an electric actuator 10, a drive mechanism (12-20), a lifting rod 21, and an emergency stop device 2.

[0028] The car 1 is suspended by a main rope (not shown) within the building's elevator shaft and can be slidably engaged with the guide rail 4 via a guiding device. If the main rope is driven by friction through a drive device (traction machine: not shown), the car 1 will rise and fall within the elevator shaft.

[0029] Image sensor 3 is installed in car 1 to acquire surface images of guide rail 4, which is a stationary object within the lifting channel. Guide rail 4 is a standard T-shaped guide rail.

[0030] In this embodiment, a surface image of the front end of the T-shaped foot is obtained as a surface image of the guide rail 4. The image processing apparatus described later (… Figure 2 The position and speed of the car 1 are measured based on the surface image of the guide rail 4 obtained by the image sensor 3. For example, the speed is calculated based on the distance traveled by image feature quantities over a given time.

[0031] In addition, CCD, CMOS, and other sensors are used as image sensors 3.

[0032] In this embodiment, the electric actuator 10 is an electromagnetic actuator, disposed on the upper part of the car 1. The electromagnetic actuator, for example, includes a movable plate or movable rod that operates via a solenoid or electromagnet. The electric actuator 10 operates when the speed controller system detects a given overspeed condition in the car 1. At this time, the lifting rod 21 is pulled up via the drive mechanism (12-20) mechanically connected to the operating lever 11. As a result, the emergency stop device 2 is put into a braking state.

[0033] Furthermore, the drive mechanisms (12-20) will be described later.

[0034] One emergency stop device 2 is installed on each side of the car 1. Each emergency stop device 2 has a pair of brake elements (not shown) that are movable between a braking position and a non-braking position, clamping the guide rail 4 in the braking position. Furthermore, if the emergency stop device 2 rises relative to the car 1 due to the car 1 descending, it generates braking force through the friction between the brake elements and the guide rail 4. Thus, the emergency stop device 2 activates when the car 1 becomes overspeeding, bringing the car 1 to an emergency stop.

[0035] The elevator device of this embodiment has a so-called cordless speed governor system that does not use a speed governor rope. If the lifting speed of the car 1 exceeds the rated speed and reaches a first overspeed (e.g., a speed not exceeding 1.3 times the rated speed), the power supply to the drive unit (traction machine) and the power supply to the control device controlling the drive unit are cut off. Furthermore, if the descent speed of the car 1 reaches a second overspeed (e.g., a speed not exceeding 1.4 times the rated speed), the electric actuator 10 provided in the car 1 is electrically driven to activate the emergency stop device 2, thereby bringing the car 1 to an emergency stop.

[0036] In this embodiment, the cordless speed controller system comprises the aforementioned image sensor 3 and a safety controller that determines the overspeed state of the car 1 based on the output signal of the image sensor 3. If the safety controller determines, based on the output signal of the image sensor, that the speed of the car 1 measured by image processing has reached a first overspeed, it outputs a command signal to cut off the power supply to the drive unit (traction machine) and the power supply to the control device controlling the drive unit. Furthermore, if the safety controller determines that the measured speed has reached a second overspeed, it outputs a command signal to activate the electric actuator 10.

[0037] As described above, if the pair of brakes of the emergency stop device 2 are pulled by the lifting rod 21, the pair of brakes clamp the guide rail 4. The lifting rod 21 is driven by the drive mechanism (12-20) connected to the electric actuator 10.

[0038] The structure of the drive mechanism is described below.

[0039] The operating lever 11 and the first working plate 16 of the electric actuator 10 are connected to form a generally T-shaped first linkage member. The operating lever 11 and the first working plate 16 form the head and foot of the T, respectively. The generally T-shaped first linkage member is rotatably supported at the crosshead 50 via the first working shaft 19 at the connection between the operating lever 11 and the first working plate 16. The end of one of a pair of lifting rods 21 (left side in the figure) is connected to the end of the first working plate 16, which forms the foot of the T, opposite to the end of the connection between the operating lever 11 and the first working plate 16.

[0040] Connecting the connecting piece 17 and the second working piece 18 forms a generally T-shaped second link member. The connecting piece 17 and the second working piece 18 respectively form the head and foot of the T. The generally T-shaped second link member is rotatably supported at the crosshead 50 via the second working shaft 20 at the connection between the connecting piece 17 and the second working piece 18. The other end (left side in the figure) of a pair of lifting rods 21 is connected to the end of the second working piece 18, which forms the foot of the T, opposite to the end of the connection between the connecting piece 17 and the second working piece 18.

[0041] The end of the operating lever 11 extending from the inside of the housing 30 of the electric actuator and the end of the connecting piece 17 that is closer to the upper part of the car 1 than the second working shaft 20 are respectively connected to one end (left side in the figure) and the other end (right side in the figure) of the drive shaft 12, which is transversely placed on the car 1. The drive shaft 12 slidably passes through the fixing part 14, which is fixed to the crosshead 50. In addition, the drive shaft 12 passes through the pressing member 15, which is fixed to the drive shaft 12. The pressing member 15 is located on the side of the second link member (connecting piece 17, second working piece 18) of the fixing part 14. The drive spring 13, which is an elastic body, is located between the fixing part 14 and the pressing member 15, and the drive spring 13 is inserted through the drive shaft 12.

[0042] When the electric actuator 10 is activated, i.e., when the energization of the electromagnet in this embodiment is cut off, the electromagnetic force that restrains the movement of the operating lever 11 against the force of the drive spring 13 disappears. Therefore, the drive shaft 12 is driven along its long side by the force of the drive spring 13 applied to the pressing member 15. Consequently, the first linkage member (operating lever 11, first working piece 16) rotates about the first working shaft 19, and the second linkage member (connecting piece 17, second working piece 18) rotates about the second working shaft 20. As a result, the lifting rod 21 connected to the first working piece 16 of the first linkage member is driven to lift, and the lifting rod 21 connected to the second working piece 18 of the second linkage member is driven to lift.

[0043] Therefore, in this embodiment, as Figure 1 As shown, the action test device 200, which tests the operation of the cordless speed controller system that enables the emergency stop device 2 to operate, is detachably mounted on the guide rail 4.

[0044] The motion testing device 200 includes a test object whose image is detected by an image sensor 3. The test object has a pattern simulating the surface state of a guide rail, and the pattern flows along the travel direction of the car 1. The cordless speed controller system detects the speed of the flow of the pattern of the test object by detecting the image of such a test object using the image sensor 3. Therefore, the cordless speed controller system can be activated even when the car 1 is stopped without moving.

[0045] Figure 2 This describes the structure of the electric actuator 10 in this embodiment. Figure 1 The top view in the settings menu. Additionally... Figure 2 The electric actuator 10 shown is in Figure 1 It is stored inside the casing 30 of the electric work machine.

[0046] exist Figure 2 The structure of the cordless speed controller system (3, 90, 103) that operates the electric work machine 10 is also described in the text. Figure 2 In the middle, emergency stop device 2 ( Figure 1 () is in the non-braking state, and the electric actuator 10 is in the standby state. That is, the elevator device is in the normal operating state.

[0047] like Figure 2 As shown, in the standby state, the movable component 34 connected to the operating lever 11 is attracted by electromagnetic force to the electromagnets 35a and 35b, which are energized by the coil being energized. This counteracts the force transmitted via the drive shaft 12 ( Figure 1 ) and the operating lever 11 acts on the drive spring 13 of the movable part 34 ( Figure 1 The force F acting against the drive spring 13 constrains the movement of the movable part 34. Therefore, the electric actuator 10 constrains the drive mechanism (12-20) by resisting the force of the drive spring 13. Figure 1 (Activities)

[0048] The movable member 34 has an adsorption portion 34a that is adsorbed onto the magnetic pole surfaces of electromagnets 35a and 35b; and a support portion 34b that is fixed to the adsorption portion 34a and connected to the operating lever 11. The operating lever 11 is rotatably connected to the support portion 34b via a connecting bracket 38. In the electric actuator 10, a movable member detection switch 109 is provided at the position where the adsorption portion 34a of the movable member 34 is located when in standby mode.

[0049] The movable member 34 also has a cam portion 34c fixed to the adsorption portion 34a. When the movable member 34 is in the standby position, the movable member detection switch 109 is operated by the cam portion 34c. If the movable member detection switch 109 is operated by the cam portion 34c, it transitions from an on state to an off state, or from an off state to an on state. Therefore, it is possible to detect whether the movable member 34 is in the standby position according to the state of the movable member detection switch 109. In this embodiment, the elevator controller 6, described later, determines whether the movable member 34 is in the standby position based on the state of the movable member detection switch 109.

[0050] In this embodiment, at least the adsorption part 34a of the movable member 34 contains a magnetic material. Soft magnetic materials such as low-carbon steel or permalloy (iron-nickel alloy) are preferably used as the magnetic material.

[0051] about Figure 2 Other departments (36, 37, 39, 41) will be described later.

[0052] Electromagnets 35a and 35b are energized by a DC power supply 111. In the energizing circuit of electromagnet 35a, one end of the coil of electromagnet 35a is connected to the high-potential side of the DC power supply 111 via electrical contact 104a, and the other end of the coil of electromagnet 35a is connected to the low-potential side of the DC power supply 111. In the energizing circuit of electromagnet 35b, one end of the coil of electromagnet 35b is connected to the high-potential side of the DC power supply 111 via electrical contact 104b, and the other end of the coil of electromagnet 35b is connected to the low-potential side of the DC power supply 111.

[0053] Electrical contacts 104a and 104b are controlled to be switched on / off by safety controller 103. In the standby state of the electric actuator 10, safety controller 103 controls electrical contacts 104a and 104b to be switched on. As a result, the electromagnets 35a and 35b generate electromagnetic force because their coils are energized.

[0054] In addition, electrical contacts 104a and 104b are each composed of contacts found in electromagnetic relays, electromagnetic contactors, electromagnetic switches, etc.

[0055] Next, the operation of the electric actuator 10 when the emergency stop device 2 is working will be explained.

[0056] The electric actuator 10 operates via a cordless speed controller system. In this embodiment, the cordless speed controller system comprises an image sensor 3, an image processing device 90, and a safety controller 103. Furthermore, the safety controller 103 may also include the functions of the image processing device 90.

[0057] The image processing device 90 performs image processing on the surface image of the guide rail 4 acquired by the image sensor 3 to calculate the speed of the car 1 and outputs a detection speed signal S1 representing the calculated speed value. The safety controller 103 determines, based on the detection speed signal S1 input from the image processing device 90, whether the lifting speed of the car 1 reaches a first overspeed (e.g., not exceeding 1.3 times the rated speed). Furthermore, the safety controller 103 determines, based on the detection speed signal S1, whether the lowering speed of the car 1 reaches a second overspeed (e.g., not exceeding 1.4 times the rated speed (> the first overspeed)).

[0058] If the safety controller 103 determines that the lifting speed of the car 1 has reached the first overspeed, it sends a disconnect command S2 to the switch 70 (e.g., an electromagnetic switch). Upon receiving the disconnect command signal S2, the switch 70 cuts off the power supply from the power source 60 to the elevator controller 6 and the traction machine 8. Therefore, the traction motor 81 of the traction machine 8 stops, and the brake 82 of the traction machine 8 engages the braking state. Thus, the car 1 stops.

[0059] If the safety controller 103 determines that the descent speed of the car 1 has reached the second overspeed, it sends disconnect command signals S3 and S4 to electrical contacts 104a and 104b respectively. Through the disconnect command signals S3 and S4, electrical contacts 104a and 104b change from the on state (…). Figure 2 The electromagnetic force acting on the movable member 34 disappears as the excitation of electromagnets 35a and 35b ceases. Consequently, the constraint on the movable member 34 caused by the attraction of the suction part 34a to the electromagnets 35a and 35b is released. Therefore, the movable member 34 is released from the constraint caused by the action of the drive spring 13. Figure 2 (F in the middle) and from the position in standby mode ( Figure 2 The movable member 34 moves in the direction of the force of the driving spring 13 (to the right in the figure). In this embodiment, the movable member 34 moves to a position abutting against the support member 41, i.e. Figure 2 As shown by the two dashed lines, move to position P when the emergency stop device is activated.

[0060] With the release of the constraint of the movable part 34, the pressing member 15 of the drive shaft 12 ( Figure 1 The received from the fixed part 14 ( Figure 1 ) towards the pressing component ( Figure 1 ) direction of drive spring 13 ( Figure 1 The force of the action of the first linkage member (operating lever 11 and first working plate 16) drives the drive shaft 12. If the drive shaft 12 is driven, the first linkage member connected to the drive shaft 12 (operating lever 11 and first working plate 16) will be activated. Figure 1 It revolves around the first working axis 19 ( Figure 1 ) rotates. This causes the lifting rod 21 (connected to the first working piece 16) to rotate. Figure 1 The second linkage member (connecting piece 17 and the second working piece 18) connected to the drive shaft 12 is lifted. Furthermore, if the drive shaft 12 is driven, the second linkage member (connecting piece 17 and the second working piece 18) connected to the drive shaft 12 is lifted. Figure 1 It revolves around the second working axis 20 ( Figure 1 ) rotate. Therefore, due to the lifting rod 21 connected to the second working piece 18 ( Figure 1 The device was pulled up, thus the emergency stop device 2 was activated.

[0061] Next, the reset operation of the electric actuator 10 will be explained. In addition, when the electric actuator 10 performs the reset operation, the power supply to the elevator controller 6 is restored in advance.

[0062] In order to restore the electric actuator 10 from the working state to Figure 2 In the standby state shown, as described below, the movable member 34 is moved from the moved position by the mechanism (36, 37, 39, 41) and the electrical equipment (6, 37, 112). Figure 2 Position P) Return to the standby position ( Figure 2 ).

[0063] The electric actuator 10 has a feed screw 36 for driving the movable part 34. The feed screw 36 is coaxially connected to the rotation shaft of the return motor 37 and is rotatably supported by the support member 41. Electromagnets 35a and 35b are fixed to an electromagnet support plate 39 having a feed nut portion (not shown). The feed nut portion in the electromagnet support plate 39 is screwed onto the feed screw 36. The feed screw 36 is rotated by the return motor 37. The return motor 37 is driven by the motor controller 112.

[0064] The motor controller 112 includes a drive circuit for the reset motor 37, and controls the rotation of the reset motor 37 in accordance with control commands from the elevator controller 6. The reset motor 37 can be either a DC motor or an AC motor.

[0065] In addition, the elevator controller 6 controls the normal operation of the car 1 and has information related to the operating status of the car 1. In this embodiment, as described above, the elevator controller 6 also has the function of controlling the reset motor 37 of the electric actuator 10 and the function of confirming the operation of the reset motor 37.

[0066] When the electric actuator 10 is returned to standby mode, the elevator controller 6 sends a rotation command to the motor controller 112 for the reset motor 37. Upon receiving the rotation command, the motor controller 112 drives the reset motor 37 to rotate the feed screw 36. The rotation of the reset motor 37 is converted into linear movement of the electromagnets 35a and 35b along the axial direction of the feed screw 36 by the rotating feed screw 36 and the feed nut portion of the electromagnet support plate 39. As a result, the electromagnets 35a and 35b approach... Figure 2 The movable position P of the movable member 34 shown is in contact with the movable member 34.

[0067] The motor controller 112 monitors the motor current to control the reset motor 37. If the electromagnets 35a and 35b come into contact with the movable part 34 as described above, the load on the reset motor 37 increases, and therefore the motor current increases. If the motor current increases and exceeds a given value, the motor controller 112 determines that the electromagnets 35a and 35b are in contact with the movable part 34. The motor controller 112 sends this determination to the safety controller 103 and the elevator controller 6.

[0068] If the safety controller 103 receives a judgment result from the motor controller 112, it outputs a connection command to each of the electrical contacts 104a and 104b. Through the connection command, the electrical contacts 104a and 104b transition from an open state to a connected state. Therefore, the electromagnets 35a and 35b are energized. The adsorption part 34a in the movable member 34 is attracted to the energized electromagnets 35a and 35b by the electromagnetic force of the electromagnets 35a and 35b.

[0069] If the elevator controller 6 receives the aforementioned determination result from the motor controller 112, it sends a reverse command to the motor controller 112 for the reset motor 37. If the motor controller 112 receives the reverse command, it reverses the rotation direction of the reset motor 37, thereby reversing the feed screw 36. As a result, the movable part 34, attracted to the electromagnets 35a and 35b, is simultaneously subjected to the force of the drive spring 13 and moves together with the electromagnets 35a and 35b to the standby position (…). Figure 2 )move.

[0070] If the movable member 34 reaches the standby position, the movable member detection switch 109 is operated by the cam portion 34c of the movable member 34. If the movable member detection switch 109 is operated, the elevator controller 6 determines that the movable member 34 is in the standby position. Based on this determination, the elevator controller 6 sends a stop command for the reset motor 37 to the motor controller 112. If the motor controller 112 receives the stop command, it stops the rotation of the reset motor 37.

[0071] It can also replace the movable part detection switch 109 and use other position detection sensors, such as photoelectric position sensors, magnetic position sensors, proximity sensors (capacitive type, inductive type), etc.

[0072] Figure 3 This indicates guide rail 4 ( Figure 1 A schematic diagram of an example of an image of the exposed surface.

[0073] exist Figure 3 In the image sensor 3 ( Figure 1 , 2Image I(t) at time t and image I(t+Δt) at time t+Δt (Δt: frame period) are both images of the exposed surface of the steel constituting guide rail 4, showing a pattern of brightness distribution representing the unevenness distribution in the exposed surface of the steel. Additionally, between time t and time t+Δt, the car 1 ( Figure 1 )decline.

[0074] Because car 1 moves, therefore, as Figure 3 As shown, a deviation d is generated between image I(t) and image I(t+Δt). Additionally, in Figure 3 In the image frame, due to the descent of the car 1, an image deviation d is generated in the upward direction.

[0075] In this embodiment, the image processing device 90 ( Figure 2 The deviation d of the image is calculated by comparing image I(t) and image I(t+Δt) using an image correlation method. In this case, while moving image I(t) or a portion thereof along the long side of guide rail 4 by a given amount in the image frame, the correlation function value between the moved image I(t) and image I(t+Δt) is calculated. The total amount of movement of image I(t) when the correlation function value reaches its maximum value is set as the deviation d of the image. The image processing device 90 calculates the speed v of the car (=d / Δt) based on the image deviation d and the frame period.

[0076] Furthermore, in order to create an uneven surface on the guide rail 4, it is preferable to perform surface finishing through grinding or the like. Additionally, the image sensor 3 preferably includes a light source that illuminates the surface of the guide rail 4. This improves the accuracy of the speed detection of the car 1.

[0077] Figure 4 This is a block diagram illustrating the functional structure of the action testing device 200 in this embodiment.

[0078] like Figure 4 As shown, the motion testing device 200 includes: an image display device 202 that serves as the object to be tested, which is the image detected by the image sensor 3; and an image control device 201 that controls the playback of the dynamic image displayed on the image display device 202.

[0079] The image control device 201 displays a dynamic image of a pattern simulating the surface condition of a guide rail flowing linearly within a display screen. The dynamic image data is stored in the storage unit 203. The drive unit 204 drives the image display device 202 based on the dynamic image data stored in the storage unit 203, according to an image playback command from the control unit 206. Thus, the image control device 201 displays a dynamic image of a pattern simulating the surface condition of a guide rail.

[0080] The dynamic image data is pre-stored in the storage unit 203 before the operation test of the cordless speed controller. In this embodiment, the communication unit 205 downloads the dynamic image data from the server device 301 of the control center 300, which monitors the operation status of multiple elevators, via the communication network 400, in response to communication commands from the control unit 206. The downloaded dynamic image data is then stored in the storage unit 203.

[0081] The control unit 206 can change the playback speed of the moving image. As a result, the speed of the pattern flow can be increased to a first speed at which the power supply 60 is cut off, and further increased to a second speed at which the emergency stop device 2 operates.

[0082] Figure 5 This refers to the action test device 200 of the cordless speed controller system in this embodiment. Figure 1 ) appearance, Figure 1 The A-direction view and the main view.

[0083] This embodiment uses a portable information terminal 210, such as a smartphone or tablet, as the motion testing device 200. The image display device 202 is composed of a liquid crystal display provided by the portable information terminal 210.

[0084] If the portable information terminal 210 is operated, the dynamic image data stored in the portable information terminal 210 is replayed. At this time, Figure 5 The image control device 201 shown displays a pattern of the simulated guide rail surface condition along the lifting direction of the car 1. Figure 5 A dynamic image of a straight line flowing in the vertical direction (within the image sensor 3). The image processing unit 90 in the cordless speed controller system acquires such a dynamic image of the pattern using the image sensor 3. Figure 2 Output speed detection signal S1.

[0085] In this embodiment, by operating the portable information terminal 210 to change the playback speed of the dynamic image, the speed of the pattern flow can be increased to the first speed at which the power supply 60 is cut off, and then to the second speed at which the emergency stop device 2 operates.

[0086] Furthermore, since the portable information terminal 210 is used as the motion testing device 200, the motion testing device 200 can be easily transported to the work site (e.g., on the car) when testing the motion of the cordless speed controller system. Moreover, if the motion testing device 200 is installed on the guide rail 4, the testing of the cordless speed controller system can be started quickly without performing operations such as connecting the power supply.

[0087] The portable information terminal 210 is housed within the casing 220. The display screen of the image display device 202 is exposed, not covered by the casing 220. The casing 220 has a permanent magnet 230 on its rear side, opposite the display screen. Figure 1 As shown, the motion test device 200 is detachably mounted on the steel guide rail 4 via the permanent magnet 230. At this time, the motion test device 200 is mounted on the guide rail 4 such that the display screen of the image display device 202 is opposite to the image sensor 3, and the dynamic image of the pattern displayed on the display screen flows along the lifting direction of the car 1.

[0088] After installing the motion test device 200 on the guide rail 4 as described above, the portable information terminal 210 is operated to replay the dynamic image. By operating the portable information terminal 210, while increasing the playback speed, the image sensor 3 detects the speed of the flow of the pattern in the dynamic image displayed on the object being tested, i.e., the image display device 202. This allows for testing the motion of the cordless speed controller system while keeping the car 1 stationary.

[0089] Figure 6 This is a schematic diagram of an example of a pattern representing the surface state of the simulated guide rail 4.

[0090] Figure 6 The pattern shown simulates the brightness distribution pattern of the uneven surface of the exposed surface of the steel that constitutes guide rail 4. Figure 3 ).exist Figure 6 In the example, multiple rectangular or strip-shaped graphics of different lengths and widths are irregularly scattered.

[0091] The shapes are not limited to rectangles or strips; they can also be regular shapes such as ellipses. Furthermore, the shapes can be as follows: Figure 3 The pattern of brightness distribution on the exposed surface of the guide rail 4 shown is an irregular shape.

[0092] Figure 7 This is a flowchart illustrating the operational testing process of the cordless speed controller system in this embodiment. Furthermore, in this embodiment, maintenance technicians perform the operational testing process.

[0093] At the start time of maintenance technicians' work, the car 1 or a counterweight (not shown) is mechanically locked within the elevator shaft. Thus, the car 1 remains stationary. Furthermore, the elevator controller 6 switches its operating mode from normal operation to maintenance operation.

[0094] If the operation begins, in step S1, the maintenance technician gets into car 1.

[0095] Next, in step S2, the maintenance technician installs the motion test device 200 (portable information terminal 210) on the guide rail 4 and sets up the test object (image display device 202) for maintenance.

[0096] Next, in step S3, the maintenance technician operates the action test device 200 (portable information terminal 210) to start the playback of the aforementioned dynamic image.

[0097] Next, in step S4, the maintenance technician operates the action test device 200 (portable information terminal 210) to increase the playback speed of the dynamic image.

[0098] Next, in step S5, while increasing the playback speed of the dynamic image, the maintenance technician determines whether the cordless speed controller system has detected the first overspeed. In this embodiment, the maintenance technician checks the state of the brake 82 of the traction machine 8. If the brake 82 transitions from the released state to the braking state, the cordless speed controller system determines that the first overspeed has been detected.

[0099] If the maintenance technician determines that the first overspeed was detected (yes in step S5), then proceed to step S6. If the technician determines that the first overspeed was not detected (no in step S5), then proceed to step S5 again.

[0100] In step S6, the maintenance technician confirms the detected speed value of the first overspeed. At this time, for example, the maintenance technician reads the speed value displayed on the speed display (e.g., an LED display (binary, hexadecimal, etc.)) of the image processing device 90 or the safety controller 103.

[0101] Next, in step S7, the maintenance technician operates the action test device 200 (portable information terminal 210) to further increase the playback speed of the dynamic image.

[0102] Next, in step S8, while increasing the playback speed of the moving image, the maintenance technician determines whether the cordless speed controller system has detected a second overspeed. In this embodiment, the maintenance technician checks whether the electric actuator 10 is activated, thereby actuating the emergency stop device 2. If the electric actuator 10 is activated, it is determined that the cordless speed controller system has detected a second overspeed.

[0103] If the maintenance technician determines that a second overspeed has been detected (yes in step S8), then proceed to step S9. If the technician determines that no second overspeed has been detected (no in step S8), then proceed to step S8 again.

[0104] In step S9, the maintenance technician confirms the detected speed value of the second overspeed. At this time, for example, the maintenance technician reads the speed value displayed on the speed display of the image processing device 90 or the safety controller 103 in the same manner as in step S6.

[0105] Next, in step S10, the maintenance technician operates the action test device 200 (portable information terminal 210) to stop the playback of the dynamic image.

[0106] Next, in step S11, the maintenance technician removes the motion test device 200 (portable information terminal 210) from the guide rail 4 and retrieves the test object (image display device 202) used for maintenance.

[0107] Next, in step S12, the maintenance technician resets the cordless speed controller system and deactivates the overspeed detection status.

[0108] Next, in step S13, the maintenance technician sets the cordless speed controller system to the recovery mode, restoring the electric workpiece 10 to its normal state. Figure 2 ).

[0109] Next, in step S14, the maintenance technician gets off the car 1 and completes a series of procedures.

[0110] In steps S5 and S8, maintenance technicians may also verify the disconnect command signal output by the safety controller 103 instead of verifying the equipment's operation. In this case, the maintenance technician verifies... Figure 2 The disconnect command signal S2 shown is used to confirm the detection of the first overspeed, and through confirmation... Figure 2 The disconnect command signals S3 and S4 shown are used to confirm the detection of the second overspeed. These disconnect command signals can be confirmed using maintenance tools carried by maintenance technicians.

[0111] In steps S6 and S9, maintenance technicians can also replace the display on the monitor, based on... Figure 2 The speed value is read by detecting the speed signal S1. In this case, the maintenance tool inputs the speed signal S1 and calculates the speed value based on the speed signal S1. The maintenance tool displays or records the calculated speed value.

[0112] Alternatively, steps S3 to S10 can be executed by the computer system of the maintenance tool. In this case, if the maintenance technician operates the maintenance tool to begin processing (step S3), the maintenance tool sends a control command (replay speed command) to the action test device 200 (portable information terminal 210) at the same time, based on the disconnect command signal S2 (… Figure 2Confirm the detection of the first overspeed, and confirm the disconnect command signals S3 and S4. Figure 2 The second overspeed detection is confirmed using the detection speed signal S1. Additionally, the maintenance tool uses this signal to confirm the speed. Figure 2 This is used to calculate the velocity values ​​of the first and second overspeeds.

[0113] According to the above embodiment, by moving the pattern of the surface state of the simulated guide rail 4 in the lifting direction of the car 1 without moving the car 1, the speed of the car 1 is simulatedly detected based on the image of the pattern obtained by the image sensor 3. Therefore, the operation of the cordless speed controller system can be tested while the car 1 is stationary.

[0114] This invention is not limited to the foregoing embodiments and includes various modifications. For example, the foregoing embodiments have been described in detail for ease of understanding of the invention, but are not necessarily limited to all the described structures. Furthermore, other structures can be added to, deleted from, or replaced in relation to a portion of the structure of the embodiments.

[0115] For example, the electric actuator 10 can be located in the lower part or side part of the car 1. In this case, the work area for maintenance technicians can be appropriately set up.

[0116] In addition, elevator units can have a machine room or be so-called machine room-less elevators without a machine room.

[0117] Explanation of reference numerals in the attached figures

[0118] 1...Car, 2...Emergency Stop Device, 3...Image Sensor, 4...Guide Rail, 6...Elevator Controller, 8...Traction Machine, 10...Electric Actuator, 11...Operating Lever, 12...Drive Shaft, 13...Drive Spring, 14...Fixing Part, 15...Pressing Member, 16...First Working Plate, 17...Connecting Plate, 18...Second Working Plate, 19...First Working Shaft, 20...Second Working Shaft, 21...Lifting Rod, 30...Electric Actuator Housing, 34...Moving Part, 34a...Adsorption Part, 34b...Support Part, 34c...Cam Part, 35a, 35b...Electromagnet, 36...Feed Screw, 37...Reset Motor, 38...Connecting Bracket, 39...Electromagnet Support Plate, 41... Supporting component, 50... Crosshead, 60... Power supply, 70... Opener / closer, 81... Traction motor, 82... Brake, 90... Image processing device, 103... Safety controller, 104a, 104b... Electrical contacts, 109... Movable part detection switch, 111... DC power supply, 112... Motor controller, 200... Action testing device, 201... Image control device, 202... Image display device, 203... Storage unit, 204... Drive unit, 205... Communication unit, 206... Control unit, 210... Portable information terminal, 220... Housing, 230... Permanent magnet, 300... Control center, 301... Server device, 400... Communication network.

Claims

1. An operation testing device for an elevator speed controller system, used to test the operation of a speed controller system that activates an emergency stop device if an overspeed condition of the car is detected based on an image of the guide rail surface obtained by an image sensor located in the car. The elevator speed controller system operation test device is characterized by having: The object being tested displays a dynamic image of a pattern that simulates the surface condition of the guide rail and flows along the lifting direction of the car. The dynamic image is acquired by the image sensor. The motion test device for the elevator speed controller system is installed on the guide rail.

2. An operational testing device for an elevator speed controller system, used to test the operation of a speed controller system that activates an emergency stop device if an overspeed condition of the car is detected based on an image of the guide rail surface obtained by an image sensor located in the car. The elevator speed controller system operation test device is characterized by having: The object being tested displays a dynamic image of a pattern that simulates the surface condition of the guide rail and flows along the lifting direction of the car. The dynamic image is acquired by the image sensor. The object being detected is an image display device. The motion test device for the elevator speed controller system includes: an image control device that controls the playback of the dynamic image displayed on the image display device.

3. The operating test device for an elevator speed controller system according to claim 1 or 2, wherein, The dynamic image is acquired by the image sensor while the car is stopped.

Images