WO2022118378A1 - エレベーターのかご過速監視装置およびエレベーターのかご過速監視システム - Google Patents
エレベーターのかご過速監視装置およびエレベーターのかご過速監視システム Download PDFInfo
- Publication number
- WO2022118378A1 WO2022118378A1 PCT/JP2020/044712 JP2020044712W WO2022118378A1 WO 2022118378 A1 WO2022118378 A1 WO 2022118378A1 JP 2020044712 W JP2020044712 W JP 2020044712W WO 2022118378 A1 WO2022118378 A1 WO 2022118378A1
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- Prior art keywords
- car
- overspeed
- state
- position detector
- unit
- Prior art date
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 77
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 238000003745 diagnosis Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 85
- 238000010586 diagram Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 5
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000015607 signal release Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
Definitions
- This disclosure relates to an elevator car overspeed monitoring device and an elevator car overspeed monitoring system.
- Patent Document 1 discloses an elevator car overspeed monitoring device.
- the car overspeed monitoring device puts the car in a stopped state when the speed of the car of the elevator is faster than the specified speed.
- the car overspeed monitoring device does not have a mechanism for releasing the stopped state of the car. If such a mechanism is provided, an interface for transmitting a signal for releasing the restrained state of the car is required. Therefore, it is not possible to provide a mechanism for releasing the restrained state of the car without complicating the configuration.
- This disclosure was made to solve the above-mentioned problems. It is an object of the present disclosure to provide an elevator car overspeed monitoring device and an elevator car overspeed monitoring system capable of providing a mechanism for releasing a car from being restrained without complicating the configuration.
- the car overspeed monitoring device for an elevator creates information indicating the position of the car of the elevator by using a signal output from a position detector provided in the hoistway of the elevator, and determines the position of the car.
- the overspeed detection unit that detects that the speed of the car is faster than the specified speed according to the position of the car by using the information representing the car and the information indicating the speed of the car, and the overspeed detection unit.
- the speed detection unit detects an overspeed state of the car, it is output from the position detector in a state where the car is stopped by the stop control unit and the car is stopped by the stop control unit.
- the restraint control unit is provided with a restraint release unit for releasing the restrained state of the car.
- the elevator car overspeed monitoring system is provided in the elevator hoistway, and uses a position detector that outputs a signal according to the position of the elevator car and a signal output from the position detector. It is equipped with a car overspeed monitoring device that creates information indicating the position of the car of the elevator.
- the restraint release unit causes the restraint control unit to release the restrained state of the car based on the signal output from the position detector when the car is stopped. Therefore, it is possible to provide a mechanism for releasing the restrained state of the car without complicating the configuration.
- FIG. 3 is a block diagram of an elevator car overspeed monitoring device according to the first embodiment.
- FIG. 3 is a block diagram of an elevator car overspeed monitoring device according to the first embodiment. It is a figure which shows the example of the release pattern of the signal input to the car hyperspeed detection device of the elevator in Embodiment 1.
- FIG. 3 is an activity diagram of an overspeed monitoring process performed by an elevator car overspeed monitoring device according to the first embodiment.
- FIG. 5 is an activity diagram of an overspeed detection process performed by an elevator car overspeed monitoring device according to the first embodiment. It is an activity diagram of the restraint release processing performed by the car overspeed monitoring device of an elevator in Embodiment 1.
- FIG. This is an example of the hardware configuration diagram of the elevator car overspeed monitoring device according to the first embodiment.
- FIG. 1 is a diagram showing an elevator system to which the elevator car overspeed monitoring system according to the first embodiment is applied.
- the hoistway 1 penetrates each floor of a building (not shown).
- the machine room (not shown) is provided directly above the hoistway 1.
- the hoisting machine 2 is provided in the machine room.
- the hoisting machine 2 includes a motor 3, a sheave 4, and a brake 5.
- the motor 3 is provided in the machine room.
- the sheave 4 is attached to the rotating shaft of the motor 3.
- the brake 5 is provided near the motor 3.
- the main rope 6 is wrapped around the sheave 4.
- the car 7 is suspended on one side of the main rope 6 inside the hoistway 1.
- the balance weight 8 is hung on the other side of the main rope 6 inside the hoistway 1.
- the car overspeed monitoring system 100 includes a plurality of position detectors 31, a switch cam 33, a speed governor 34, and a car overspeed monitoring device 40.
- the plurality of position detectors 31 are provided in the hoistway 1.
- the plurality of position detectors 31 are arranged so as to be on the same straight line facing the vertical direction.
- the plurality of position detectors 31 are classified into a plurality of upper position detectors 31a and a plurality of lower position detectors 31b.
- the plurality of upper position detectors 31a are provided above the intermediate position in the vertical direction of the hoistway 1.
- the plurality of lower position detectors 31b are provided below the intermediate position in the vertical direction of the hoistway 1.
- the position detector 31 includes a detection unit 32.
- the detection unit 32 is provided so as to be movable between the initial position and the pressed position.
- the switch cam 33 is provided in the car 7.
- the switch cam 33 exists at a position where the detection units 32 of the plurality of position detectors 31 can be pushed.
- the governor 34 is provided over the machine room and the hoistway 1.
- the governor 34 includes a governor sheave 34a, a governor rope 34b, and a governor encoder 34c.
- the governor sheave 34a is provided in the machine room.
- the governor rope 34b is endless.
- the governor rope 34b is wound around the governor sheave 34a. A part of the governor rope 34b is connected to the car 7.
- the governor encoder 34c is attached to the governor sheave 34a.
- the car overspeed monitoring device 40 is provided in the machine room.
- the car overspeed monitoring device 40 includes a power supply 9c, two safety relays 41, and a processor 50.
- the power supply 9c is electrically connected to an external power supply.
- the safety relay 41 is an electromagnetic relay.
- the two safety relays 41 have the same configuration.
- the two safety relays 41 are electrically connected to the power supply 9c.
- the safety relay 41 includes a main contact 41a.
- the main contact 41a is the a contact.
- the two main contacts 41a are electrically connected in series.
- the processor 50 is electrically connected to a plurality of position detectors 31 and a speed governor encoder 34c.
- the processor 50 is electrically connected to the control terminals of the two safety relays 41.
- the power supply 9a is provided in the machine room.
- the power source 9a is electrically connected to an external commercial power source.
- control panel 20 is provided in the machine room.
- the control panel 20 includes an inverter 21, a brake control device 22, a power supply 9b, a motor relay 24, a brake relay 25, and an operation control device 23.
- the inverter 21 is electrically connected to the power supply 9a via a rectifier.
- the inverter 21 is electrically connected to the motor 3.
- the brake control device 22 is electrically connected to the power supply 9a via a rectifier and a DC / DC converter.
- the brake control device 22 is electrically connected to the brake 5.
- the power supply 9b is electrically connected to an external power supply.
- the motor relay 24 is an electromagnetic contactor.
- the motor relay 24 is electrically connected to the power supply 9b via the two main contacts 41a.
- the motor relay 24 includes a main contact 24a.
- the main contact 24a is a contact.
- the main contact 24a is electrically connected between the power supply 9a and the inverter 21.
- the brake relay 25 is an electromagnetic relay.
- the brake relay 25 is electrically connected to the power supply 9b via the two main contacts 41a.
- the brake relay 25 includes a main contact 25a.
- the main contact 25a is a contact.
- the main contact 25a is electrically connected between the brake 5 and the brake control device 22.
- the operation control device 23 is connected to the control terminal of the motor relay 24 and the control terminal of the brake relay 25.
- the power supply 9c supplies power to the two safety relays 41.
- the two main contacts 41a are in the closed state.
- the power supply 9b supplies power to the motor relay 24 and the brake relay 25.
- the main contact 24a When power is supplied to the motor relay 24, the main contact 24a is in the closed state. When the main contact 24a is closed, the power supply 9a supplies electric power to the inverter 21.
- the main contact 25a When power is supplied to the brake relay 25, the main contact 25a is in the closed state. When the main contact 25a is in the closed state, the brake control device 22 supplies electric power to the brake 5.
- the operation control device 23 rotates the motor 3 by controlling the inverter 21.
- the sheave 4 rotates following the rotation of the motor 3.
- the main rope 6 moves following the rotation of the sheave 4.
- the basket 7 and the counterweight 8 follow the movement of the main rope 6 and move up and down in opposite directions.
- the operation control device 23 stops the rotation of the motor 3 by controlling the inverter 21.
- the sheave 4 stops following the stop of rotation of the motor 3.
- the main rope 6 stops moving following the stop of rotation of the sheave 4.
- the car 7 and the counterweight 8 stop moving up and down following the stop of movement of the main rope 6.
- the operation control device 23 controls the brake control device 22 to cut off the supply of electric power to the brake 5.
- the motor 3 is stopped and held by the brake 5.
- the governor rope 34b moves according to the raising and lowering of the car 7.
- the governor sheave 34a rotates in synchronization with the movement of the governor rope 34b.
- the governor encoder 34c detects the amount of angle at which the governor sheave 34a rotates.
- the speed governor encoder 34c outputs a signal according to the amount of the angle at which the speed governor sheave 34a rotates.
- the amount of the angle is an amount representing the movement of the car 7, which is the relationship between the position of the car 7 and the speed.
- the detection unit 32 of the position detector 31 exists at the initial position when no external force is applied. When the detection unit 32 of the position detector 31 is present at the initial position, the position detector 31 outputs a signal by applying a voltage to the circuit. The detection unit 32 of the position detector 31 moves from the initial position to the pressed position when an external force toward the pressed position is applied. When the detection unit 32 of the position detector 31 is present at the pressed position, the position detector 31 does not output a signal.
- the switch cam 33 pushes the detection unit 32 of the position detector 31. In this case, the detection unit 32 moves from the initial position to the pressed position. After that, when the car 7 moves to a position farther than the detection distance with respect to the position detector 31, the switch cam 33 separates from the detection unit 32 of the position detector 31. In this case, the detection unit 32 moves from the pressed position to the initial position.
- the processor 50 creates information on the speed of the car 7 based on the signal from the governor sheave 34a.
- the processor 50 detects that the signal output from the position detector 31 has changed from the input state to the non-input state. In this case, the processor 50 detects that the position of the car 7 is the position of the position detector 31. The processor 50 creates information on the position of the car 7.
- the processor 50 monitors whether or not the car 7 is in an overspeed state by using the information on the position of the car 7 and the information on the speed of the car 7.
- the overspeed state is a state in which the speed of the car 7 is higher than the reference speed set according to the position of the car 7.
- the processor 50 When the processor 50 detects an overspeed state of the car 7, the processor 50 cuts off the power supply to at least one of the two safety relays 41. When the power supply to the safety relay 41 is cut off, the main contact 41a opens. When the main contact 41a is opened, the power supply to the motor relay 24 and the brake relay 25 is cut off.
- the main contact 24a opens.
- the power supply to the motor 3 and the inverter 21 is cut off.
- the motor 3 is stopped.
- the main contact 25a opens.
- the power supply to the brake 5 is cut off.
- the brake 5 brakes the rotation of the motor 3.
- the car overspeed monitoring device 40 is in a stopped state. In the stopped state, the car overspeed monitoring device 40 continuously cuts off the power supply to the safety relay 41. In this case, the power supply to the motor relay 24 and the brake relay 25 is continuously cut off. Motor 3 does not start. The brake 5 maintains a state in which the rotation of the motor 3 is damped. The car 7 is in a restrained state. The car 7 continues to be stopped.
- the processor 50 detects the signal of the release pattern input from the position detector 31. For example, the operator manually presses the detection unit 32 of the position detector 31 in the operation of the release pattern. For example, the operator changes the position of the detection unit 32 in the operation of the release pattern.
- the car overspeed monitoring device 40 releases the restrained state.
- the processor 50 puts the two safety relays 41 into a state of being supplied with electric power.
- the two main contacts 41a close.
- the motor relay 24 and the brake relay 25 are in a state of being supplied with electric power.
- the main contact 24a closes.
- the motor 3 and the inverter 21 are in a state of being supplied with electric power.
- the brake relay 25a closes.
- the brake 5 is in a state of being supplied with electric power.
- the car 7 is released from the restrained state.
- the car 7 changes from the stopped state to the normal operation state.
- FIG. 2 is a block diagram showing an elevator car overspeed monitoring device according to the first embodiment.
- the processor 50 constitutes a dual system.
- the processor 50 includes a first processor 50a and a second processor 50b.
- the first processor 50a and the second processor 50b have the same configuration.
- the same signal is input from the position detector 31 to the first processor 50a and the second processor 50b.
- the same signal is input from the speed governor encoder 34c to the first processor 50a and the second processor 50b.
- the first processor 50a controls the supply of electric power to one of the two safety relays 41.
- the second processor 50b controls the supply of electric power to the other of the two safety relays 41.
- the first processor 50a and the second processor 50b perform the same operation.
- the first processor 50a monitors whether or not the second processor 50b is performing the same operation.
- the second processor 50b monitors whether or not the first processor 50a is performing the same operation.
- FIG. 3 is a block diagram of the elevator car overspeed monitoring device according to the first embodiment.
- the first processor 50a includes a storage unit 51, a diagnosis unit 52, a determination unit 53, an overspeed detection unit 54, a restraint release unit 55, and a restraint control unit 56.
- the storage unit 51 stores the information of the stop flag.
- the information of the stop flag is the information that the stop flag is "valid" or "invalid".
- the diagnostic unit 52 creates information on the estimated position of the car 7 inside the hoistway 1 using the signal input from the governor encoder 34c. When the signal input from a certain position detector 31 matches the estimated position, the diagnostic unit 52 diagnoses that the position detector 31 is operating normally. If the signal input from a certain position detector 31 does not match the estimated position, the diagnostic unit 52 diagnoses that the position detector 31 is not operating normally.
- the diagnostic unit 52 diagnoses that a certain position detector 31 is operating normally, the diagnostic unit 52 stores the diagnostic information that the position detector 31 is "normal” in the storage unit 51.
- the diagnosis unit 52 diagnoses that a certain position detector 31 is not operating normally, the diagnosis unit 52 stores the diagnostic information that the position detector 31 is "abnormal" in the storage unit 51.
- the diagnostic unit 52 stores a plurality of diagnostic information corresponding to the plurality of position detectors 31 in the storage unit 51.
- the determination unit 53 determines whether or not the diagnostic information of all the position detectors 31 includes the information "normal” and the stop flag is "valid".
- the overspeed detection unit 54 may determine the plurality of position detectors. Using the plurality of signals input from 31 and the signal input from the speed governor encoder 34c, it is detected whether or not the car 7 is in an overspeed state.
- the stop release unit 55 uses the information of the detection position to use the information of the detection position.
- a release position detector is set from the plurality of position detectors 31.
- the detection position is the position of the car 7 when it is detected that the vehicle is in an overspeed state.
- the release position detector is a position detector 31 that accepts an operation of the release pattern.
- the restraint release unit 55 receives the input of the signal output from the release position detector.
- the restraint release unit 55 does not accept the input of signals output from a plurality of position detectors 31 other than the release position detector.
- the restraint release unit 55 detects the signal of the release pattern.
- the stop control unit 56 When the stop control unit 56 detects that the stop flag is "valid”, the stop control unit 56 cuts off the power supply to the safety relay 41. In this case, the car overspeed monitoring device 40 is stopped. When the stop control unit 56 detects that the stop flag is "invalid”, the power is supplied to the safety relay 41. In this case, the car overspeed monitoring device 40 is in a state where the restraint state is released.
- FIG. 4 is a diagram showing an example of a signal of a signal release pattern of a signal input to the car overspeed detection device of the elevator according to the first embodiment.
- FIG. 4 the state of the signal output from a certain position detector 31, the number of times the position detector 31 is operated, and the state of the car overspeed monitoring device 40 are shown.
- the horizontal axis is time.
- the release pattern signal is a pattern signal in which the position detector 31 is operated three times. At this time, when the position detector 31 is pressed for 0.5 seconds or longer, the restraint release unit 55 considers that the position detector 31 has been operated once. After that, when the position detector 31 is pressed for 0.5 seconds or more after 1.0 second or more has elapsed from the operation of the position detector 31, the restraint release unit 55 states that the position detector 31 has been operated once. I reckon.
- a certain position detector 31 is pressed by the operator.
- the time between the time t_1 and the time t_1 is 0.5 seconds or more. From time t_1 to time t_2, the position detector 31 does not output a signal.
- the restraint release unit 55 considers that the position detector 31 has been operated once. In this case, the restraint release unit 55 detects that the position detector 31 has been operated once.
- time t_2 and time t_3 are 1.0 second or longer.
- the position detector 31 is pressed by the operator between the time t_3 and the time t_4.
- the time between time t_3 and time t_4 is less than 0.5 seconds. In this case, the restraint release unit 55 does not consider that the position detector 31 has been operated.
- the position detector 31 is not pressed by the operator.
- time t_5 and time t_6 a certain position detector 31 is pressed by the operator.
- the time between the time t_5 and the time t_6 is 0.5 seconds or more.
- the restraint release unit 55 considers that the position detector 31 has been operated once.
- the restraint release unit 55 detects that the position detector 31 has been operated twice.
- time t_6 and time t_7 are 1.0 second or longer.
- a certain position detector 31 is pressed by the operator.
- the time between the time t_7 and the time t_8 is 0.5 seconds or more.
- the restraint release unit 55 considers that the position detector 31 has been operated once.
- the restraint release unit 55 detects that the position detector 31 has been operated three times. In this case, the restraint release unit 55 causes the restraint control unit 56 to release the restraint state.
- the car overspeed monitoring device 40 changes from the state of waiting for the release of the restraint state to the state in which the release of the restraint state is completed.
- FIG. 5 is an activity diagram of the overspeed monitoring process performed by the elevator car overspeed monitoring device according to the first embodiment.
- the dashed arrow indicates the flow in which control is performed.
- the arrows drawn by solid lines indicate the flow in which signals or information are exchanged.
- the car overspeed monitoring device 40 starts the overspeed monitoring process when the power is turned on.
- the car overspeed monitoring device 40 performs processing S001 and processing S002 to processing S005 in parallel in the overspeed monitoring processing.
- Process S001 is a position detector diagnostic process.
- the diagnostic unit 52 receives inputs of a plurality of signals output from the plurality of position detectors 31 and signals output from the speed governor encoder 34c.
- the diagnostic unit 52 uses the signals output from the plurality of position detectors 31 and the signals output from the speed governor encoder 34c to determine whether or not each of the plurality of position detectors 31 is operating normally. Diagnose.
- the diagnostic unit 52 stores in the storage unit 51 the diagnostic information that the position detector 31 is "normal” or the diagnostic information that the position detector 31 is "abnormal” for each of the plurality of position detectors 31. Let me. After that, the diagnosis unit 52 ends the process S001.
- Process S002 is a determination process.
- the determination unit 53 acquires a plurality of diagnostic information corresponding to the plurality of position detectors 31 and information on the stop flag from the storage unit 51.
- the determination unit 53 determines whether or not the diagnostic information of all the position detectors 31 is "normal” and the stop flag is "valid".
- the determination unit 53 determines that the stop release unit 55 is the signal output from the position detector 31. Switch from the state where input is not accepted to the state where input is accepted.
- the determination unit 53 When it is determined that the diagnostic information of a certain position detector 31 includes the information "abnormal”, or when it is determined that the stop flag is "invalid", the determination unit 53 causes the stop release unit 55 from the position detector 31. Switches from the state of accepting the input of the output signal to the state of not accepting it. After that, the determination unit 53 ends S002.
- the process S003 is an overspeed detection process.
- the overspeed detection unit 54 receives inputs of a plurality of signals output from the plurality of position detectors 31 and signals output from the speed governor encoder 34c. The overspeed detection unit 54 detects whether or not the car 7 is in an overspeed state.
- the overspeed detection unit 54 ends the process S003.
- the overspeed detection unit 54 changes the information of the stop flag stored in the storage unit 51 to the information in which the stop flag is "valid".
- the overspeed detection unit 54 stores the information of the detection position in the storage unit 51. After that, the overspeed detection unit 54 ends the process S003.
- the process S004 is a stop control process.
- the stop control unit 56 acquires the stop flag information from the storage unit 51.
- the restraint control unit 56 detects whether the restraint flag is "valid" or "invalid”.
- the stop control unit 56 cuts off the power supply to the safety relay 41. After that, the restraint control unit 56 ends the process S004.
- the stop control unit 56 detects that the stop flag is "invalid”
- the power is supplied to the safety relay 41. After that, the restraint control unit 56 ends the process S004.
- the process S005 is performed.
- the process S005 is a restraint release process.
- the restraint release unit 55 acquires the detection position information from the storage unit 51.
- the restraint release unit 55 sets the release position detector from among the plurality of position detectors 31 by using the detection position information.
- the stop release unit 55 stores the information of the stop flag stored in the storage unit 51, and the stop flag is "invalid". Change to information that is. After that, the restraint release unit 55 ends the process S005. After that, the processing after the processing S004 is performed.
- the restraint release unit 55 ends the process S005.
- the car overspeed monitoring device 40 ends the processing flow of the processing S001 and the processing S002 to the processing S005. After that, the car overspeed monitoring device 40 performs the processing S001 and the processing from the processing S002 to the processing S005 in parallel every time set as the control cycle.
- the car overspeed monitoring device 40 ends the overspeed monitoring process.
- FIG. 6 is an activity diagram of the overspeed detection process performed by the elevator car overspeed monitoring device according to the first embodiment.
- the overspeed detection unit 54 receives the input of the signal output from the position detector 31 for the set time.
- the overspeed detection unit 54 detects whether or not any of the position detectors 31 among the plurality of position detectors 31 is pressed. After that, the overspeed detection unit 54 ends the process S101.
- the process S102 is performed.
- the overspeed detection unit 54 sets the position of the car 7 to the position of the pressed position detector 31.
- the overspeed detection unit 54 stores information on the position of the car 7. After that, the overspeed detection unit 54 ends the process S102.
- the overspeed detection unit 54 receives the input of the signal output from the governor encoder 34c.
- the overspeed detection unit 54 calculates the distance traveled by the car 7 using the signal output from the governor encoder 34c.
- the overspeed detection unit 54 sets a position reflecting the distance traveled by the car 7 to the position of the car 7 as the position of the updated car 7.
- the overspeed detection unit 54 stores the information on the position of the car 7 after the update. After that, the overspeed detection unit 54 ends the process S103.
- the process S104 is performed.
- the overspeed detection unit 54 receives the input of the signal output from the governor encoder 34c.
- the overspeed detection unit 54 calculates the speed of the car 7 using the signal output from the governor encoder 34c.
- the overspeed detection unit 54 stores information on the speed of the car 7. After that, the overspeed detection unit 54 ends the process S104.
- the process S105 is performed.
- the overspeed detection unit 54 calculates the upper limit speed of the car 7 according to the position of the updated car 7 by using the information of the car overspeed monitoring pattern.
- the information of the car overspeed monitoring pattern is the information of the function of the upper limit speed of the car 7 with respect to the position of the car 7.
- the information of the car overspeed monitoring pattern is set in advance in the overspeed detection unit 54.
- the overspeed detection unit 54 stores information on the calculated upper limit speed of the car 7. After that, the overspeed detection unit 54 ends the process S105.
- the process S106 is performed.
- the overspeed detection unit 54 compares the speed of the car 7 stored in the process S104 with the upper limit speed of the car 7 stored in the process S105. When the speed of the car 7 is faster than the upper limit speed of the car 7, the overspeed detection unit 54 detects that the car 7 is in the overspeed state. After that, the overspeed detection unit 54 ends the process S106.
- the process S107 is performed.
- the overspeed detection unit 54 changes the information of the stop flag stored in the storage unit 51 to the information in which the stop flag is “valid”. After that, the overspeed detection unit 54 ends the process S107.
- the process S108 is performed.
- the overspeed detection unit 54 sets the detection position to the position of the updated car 7.
- the overspeed detection unit 54 stores the information of the detection position in the storage unit 51. After that, the overspeed detection unit 54 ends the process S108.
- the overspeed detection unit 54 ends the overspeed detection process.
- FIG. 7 is an activity diagram of the restraint release process performed by the elevator car overspeed monitoring device according to the first embodiment.
- the restraint release unit 55 acquires the detection position information from the storage unit 51.
- the restraint release unit 55 sets the release position detector from the plurality of position detectors 31 based on the information of the detection position. For example, the restraint release unit 55 sets the release position detector to the position detector 31 that exists at a position farther than the vertical length of the car 7 from the detection position. For example, when the detection position is above the center of the hoistway 1, the restraint release unit 55 sets the release position detector to the lower position detector 31b. After that, the restraint release unit 55 ends the process S201.
- the process S202 is performed.
- the restraint release unit 55 receives the input of the signal output from the release position detector.
- the restraint release unit 55 detects whether or not the release pattern signal is input from the release position detector during the set time. After that, the restraint release unit 55 ends the process S202.
- the process S203 is performed.
- the restraint release unit 55 changes the information of the stop flag stored in the storage unit 51 to the information in which the stop flag is “invalid”. After that, the restraint release unit 55 ends the process S203.
- the restraint release unit 55 ends the stop release process.
- the car overspeed monitoring device 40 includes an overspeed detection unit 54, a stop control unit 56, and a stop release unit 55.
- the restraint release unit 55 causes the restraint control unit 56 to release the restrained state of the car 7.
- the position detector 31 functions as an interface for releasing the restrained state of the car 7. Therefore, it is not necessary to newly provide the interface. As a result, it is possible to provide a mechanism for releasing the restrained state of the car 7 without complicating the configuration.
- the car overspeed monitoring device 40 is provided with a safety relay 41.
- the safety relay 41 puts the car 7 in a stopped state.
- the restraint control unit 56 controls the supply of electric power to the safety relay 41 so that the main contact 41a of the safety relay 41 opens, thereby putting the car 7 in a restrained state.
- the restraint release unit 55 releases the restrained state of the car 7 by controlling the stop control unit 56 to supply electric power to the safety relay 41 so that the main contact 41a of the safety relay 41 is closed. Therefore, it is possible to provide a mechanism for releasing the restrained state of the car 7.
- the restraint release unit 55 does not accept the input of the signal output from the position detector 31. Switch to the accepting state from. Therefore, it is possible to prevent the signal from being input to the restraint release unit 55 when the overspeed state of the car 7 is not detected.
- the car overspeed monitoring device 40 includes a diagnostic unit 52.
- the diagnosis unit 52 When there is a position detector 31 that the diagnosis unit 52 has diagnosed as not operating normally, the car overspeed monitoring device 40 does not perform an operation of releasing the state in which the car 7 is stopped. Therefore, the car overspeed monitoring device 40 can release the state in which the car 7 is stopped based on the signal from the position detector 31 that is operating normally. As a result, safety is improved.
- the car overspeed monitoring device 40 releases the state in which the car 7 is stopped. Therefore, it is possible to prevent the car 7 from being erroneously released from the restraint.
- the car overspeed monitoring device 40 creates information indicating the speed of the car 7 using the signal output from the speed governor 34. Therefore, the car overspeed monitoring device 40 can create the speed of the car 7.
- the car overspeed monitoring device 40 creates information on the detection position of the car 7 when it is detected that the car is in an overspeed state.
- the car overspeed monitoring device 40 sets the release position detector using the information of the detection position.
- the car overspeed monitoring device 40 does not accept the input of the signal output from the position detector 31 which is not the release position detector. Therefore, it is possible to prevent the car 7 from being erroneously released from the restraint.
- the car overspeed monitoring system 100 includes a plurality of position detectors 31 and a car overspeed monitoring device 40. Therefore, a mechanism for releasing the restrained state of the car 7 can be provided at low cost.
- the car overspeed monitoring system 100 includes a speed governor 34. Therefore, the car overspeed monitoring device 40 can calculate the speed of the car 7.
- the car overspeed monitoring device and the car overspeed monitoring system according to the first embodiment are provided in an elevator in which a hoisting machine 2, a control panel 20, and a speed governor 34 are provided at the upper or lower part of the hoistway 1 without a machine room. 100 may be applied.
- the car overspeed monitoring device 40 may be provided at the upper part or the lower part of the hoistway 1.
- the power supply 9b may be electrically connected to the DC / DC converter. In this case, the power supply 9b is supplied with power from the DC / DC converter. Further, the power supply 9c may be electrically connected to the DC / DC converter. In this case, the power supply 9c is supplied with power from the DC / DC converter.
- the stop control unit 56 may control the supply of electric power to the safety relay 41 without being based on the information of the safety flag.
- the overspeed detection unit 54 may transmit stop information to the stop control unit 56 to control the safety relay 41 so that the stop control unit 56 opens the main contact 41a of the safety relay 41.
- the stop control unit 56 may control the supply of electric power to the safety relay 41 so that the main contact 41a of the safety relay 41 opens.
- the restraint release unit 55 may transmit release information to the stop control unit 56 to control the safety relay 41 so that the stop control unit 56 closes the main contact 41a of the safety relay 41.
- the restraint control unit 56 may control the supply of electric power to the safety relay 41 so that the main contact 41a of the safety relay 41 closes when the release information is received.
- the car overspeed monitoring device 40 may be applied to an elevator system that does not have a speed governor 34.
- the car overspeed monitoring device 40 may acquire a signal representing the speed of the car 7 or information representing the speed of the car 7 from a device other than the speed governor 34.
- the car overspeed monitoring device 40 may acquire a signal representing the speed of the car 7 or information representing the speed of the car 7 from the operation control device 23.
- the car overspeed monitoring device 40 may be replaced with the speed governor 34 as an electronic safety device in the elevator system.
- the elevator system to which the car overspeed monitoring device 40 is applied has a safety function that meets the standards required by ISO regulations and the like. Specifically, for example, the elevator system satisfies the requirements described in "ISO 810-1: 2019 5.6.2.2.2.1 b".
- the position detector 31 is an interface for releasing the restraint of the car.
- the position detector 31 has a high level of safety and reliability required for the interface according to ISO regulations.
- the position detector 31 includes a mechanism required for the interface, such as a duplicated mechanism and a mechanism for performing self-diagnosis.
- FIG. 8 is an example of a hardware configuration diagram of the elevator car overspeed monitoring device according to the first embodiment.
- Each function of the first processor 50a can be realized by a processing circuit.
- the processing circuit comprises at least one processor 200a and at least one memory 200b.
- the processing circuit comprises at least one dedicated hardware 300.
- each function of the first processing unit 50a is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in at least one memory 200b. At least one processor 200a realizes each function of the first processor 50a by reading and executing a program stored in at least one memory 200b. At least one processor 200a is also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a DSP.
- At least one memory 200b is a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, or the like.
- the processing circuit comprises at least one dedicated hardware 300
- the processing circuit may be implemented, for example, as a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
- each function of the first processor 50a is realized by a processing circuit.
- each function of the first processor 50a is collectively realized by a processing circuit.
- a part may be realized by the dedicated hardware 300, and the other part may be realized by software or firmware.
- the function of the overspeed detection unit 54 is realized by a processing circuit as dedicated hardware 300, and at least one processor 200a is stored in at least one memory 200b for functions other than the function of the overspeed detection unit 54. It may be realized by reading and executing the program.
- the processing circuit realizes each function of the first processing unit 50a by hardware, software, firmware, or a combination thereof.
- the elevator car overspeed monitoring device and the elevator car overspeed monitoring system according to the present disclosure can be used for the elevator system.
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Abstract
Description
図1は実施の形態1におけるエレベーターのかご過速監視システムが適用されるエレベーターシステムを表す図である。
図2は実施の形態1におけるエレベーターのかご過速監視装置を表すブロック図である。
図3は実施の形態1におけるエレベーターのかご過速監視装置のブロック図である。
図4は実施の形態1におけるエレベーターのかご過速検出装置に入力される信号の解除パターンの信号の例を表す図である。
図5は実施の形態1におけるエレベーターのかご過速監視装置が行う過速監視処理のアクティビティ図である。アクティビティ図において、破線で描かれた矢印は、制御が行われるフローを示す。アクティビティ図において、実線で描かれた矢印は、信号または情報がやり取りされるフローを示す。
図6は実施の形態1におけるエレベーターのかご過速監視装置が行う過速検出処理のアクティビティ図である。
図7は実施の形態1におけるエレベーターのかご過速監視装置が行う制止解除処理のアクティビティ図である。
図8は実施の形態1におけるエレベーターのかご過速監視装置のハードウェア構成図の例である。
Claims (9)
- エレベーターの昇降路に設けられた位置検出器から出力される信号を用いて前記エレベーターのかごの位置を表す情報を作成し、前記かごの位置を表す情報と前記かごの速度を表す情報とを用いて、前記かごの位置に応じた規定の速度よりも前記かごの速度が速い過速状態であることを検出する過速検出部と、
前記過速検出部が前記かごの過速状態を検出した場合に、前記かごが制止された状態にする制止制御部と、
前記制止制御部によって前記かごが制止された状態で前記位置検出器から出力される信号の状態が変化したことを検出した場合に、前記制止制御部に前記かごが制止された状態を解除させる制止解除部と、
を備えたエレベーターのかご過速監視装置。 - 主接点が開いた場合に、前記エレベーターのモータとブレーキとへの電力の供給を遮断することで前記かごを制止された状態にする安全リレー、
を備え、
前記制止制御部は、前記過速検出部が前記かごの過速状態を検出した場合に、前記安全リレーの前記主接点が開くよう前記安全リレーを制御することで前記かごが制止された状態にし、
前記制止解除部は、前記制止制御部によって前記かごが制止された状態で前記位置検出器から出力される信号の状態が変化した場合に、前記制止制御部に前記安全リレーの前記主接点を閉じるよう前記安全リレーを制御させることで前記かごが制止された状態を解除する請求項1に記載のエレベーターのかご過速監視装置。 - 前記過速検出部が前記かごの過速状態を検出した場合に、前記制止解除部が前記位置検出器から出力される信号の入力を受け付けない状態から受け付ける状態に切り換える判定部、
を備えた請求項1または請求項2に記載のエレベーターのかご過速監視装置。 - 前記位置検出器から出力される信号と前記かごの移動を表す信号とを用いて、前記位置検出器が正常に動作しているか否かを診断する診断部、
を備え、
前記制止解除部は、前記診断部によって前記位置検出器が正常に動作していないと診断された場合に、前記制止制御部に前記かごが制止された状態を解除させる動作を行わない請求項1から請求項3のいずれか一項に記載のエレベーターのかご過速監視装置。 - 前記制止解除部は、前記制止制御部によって前記かごが制止された状態で前記位置検出器から入力された信号が規定の解除パターンの信号である場合に、前記制止制御部に前記かごが制止された状態を解除させる請求項1から請求項4のいずれか一項に記載のエレベーターのかご過速監視装置。
- 前記過速検出部は、前記エレベーターの前記かごの移動を検出する調速機から出力される信号を用いて前記かごの速度を表す情報を作成する請求項1から請求項5のいずれか一項に記載のエレベーターのかご過速監視装置。
- 前記過速検出部は、前記かごの過速状態を検出した場合に、前記昇降路に設けられた複数の位置検出器から出力される信号と前記かごの速度を表す情報とを用いて、過速状態であることが検出されたときの前記かごの検出位置の情報を作成し、
前記制止解除部は、前記過速検出部が作成した前記検出位置の情報を用いて、前記複数の位置検出器の中から解除用位置検出器を設定し、前記解除用位置検出器を設定した場合に前記解除用位置検出器でない前記複数の位置検出器から出力される信号の入力を受け付けない請求項1から請求項6のいずれか一項に記載のエレベーターのかご過速監視装置。 - エレベーターの昇降路に設けられ、前記エレベーターのかごの位置に応じた信号を出力する位置検出器と、
前記位置検出器から出力される信号を用いて前記エレベーターの前記かごの位置を表す情報を作成する請求項1から請求項7のいずれか一項に記載されたエレベーターのかご過速監視装置と、
を備えたエレベーターのかご過速監視システム。 - 前記昇降路に設けられ、前記かごの速度に応じた信号を出力する調速機、
を備え、
前記かご過速監視装置は、前記調速機から出力された信号を用いて前記かごの速度を表す情報を作成する請求項8に記載のエレベーターのかご過速監視システム。
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PCT/JP2020/044712 WO2022118378A1 (ja) | 2020-12-01 | 2020-12-01 | エレベーターのかご過速監視装置およびエレベーターのかご過速監視システム |
JP2022566528A JP7375955B2 (ja) | 2020-12-01 | 2020-12-01 | エレベーターのかご過速監視装置およびエレベーターのかご過速監視システム |
KR1020237015015A KR20230083310A (ko) | 2020-12-01 | 2020-12-01 | 엘리베이터의 엘리베이터 칸 과속 감시 장치 및 엘리베이터의 엘리베이터 칸 과속 감시 시스템 |
CN202080107193.4A CN116547225A (zh) | 2020-12-01 | 2020-12-01 | 电梯的轿厢超速监视装置以及电梯的轿厢超速监视系统 |
DE112020007810.8T DE112020007810T5 (de) | 2020-12-01 | 2020-12-01 | Aufzugskabinenübergeschwindigkeitsbeobachtungsvorrichtung und Aufzugskabinenübergeschwindigkeitsbeobachtungssystem |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09263373A (ja) * | 1996-03-28 | 1997-10-07 | Mitsubishi Electric Corp | エレベータの制御装置 |
JP2006315823A (ja) * | 2005-05-13 | 2006-11-24 | Hitachi Ltd | エレベータ制御装置 |
JP2009214965A (ja) * | 2008-03-07 | 2009-09-24 | Toshiba Elevator Co Ltd | エレベータ |
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JP4575076B2 (ja) | 2004-08-05 | 2010-11-04 | 三菱電機株式会社 | エレベータ装置 |
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- 2020-12-01 DE DE112020007810.8T patent/DE112020007810T5/de active Pending
- 2020-12-01 CN CN202080107193.4A patent/CN116547225A/zh active Pending
- 2020-12-01 KR KR1020237015015A patent/KR20230083310A/ko unknown
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09263373A (ja) * | 1996-03-28 | 1997-10-07 | Mitsubishi Electric Corp | エレベータの制御装置 |
JP2006315823A (ja) * | 2005-05-13 | 2006-11-24 | Hitachi Ltd | エレベータ制御装置 |
JP2009214965A (ja) * | 2008-03-07 | 2009-09-24 | Toshiba Elevator Co Ltd | エレベータ |
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