Elevator system, elevator system control method and program

Abstract

This technology provides a simple configuration that allows the elevator car door to be unlocked when the car is inside the door zone, and prevents unintended unlocking of the elevator car door. [Solution] This system comprises a door lock device that mechanically locks the elevator car door, a sensor that detects the absolute position of the elevator car, an elevator car control device that controls the elevator car based on the absolute position of the elevator car, and a door control device that controls the door and the door lock device. The elevator car control device comprises a speed determination unit that determines whether the speed of the elevator car has decreased to below a reference speed, a door zone determination unit that determines whether the elevator car is inside the door zone based on the detected absolute position of the elevator car, and a signal output unit that outputs a lock release signal when it is determined that the elevator car is inside the door zone and that the speed of the elevator car has decreased to below a reference speed. The door control device receives the lock release signal, unlocks the door lock device, and then opens the door.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an elevator system, a control method for an elevator system, and a program. BACKGROUND ART

[0002] There has been known a locking device capable of locking, in a closed state, an elevator car door that opens and closes by sliding horizontally relative to an elevator car (see, for example, Patent Document 1). PRIOR ART DOCUMENT PATENT DOCUMENT

[0003] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2010-163241 SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION

[0004] When an elevator car door locking device as disclosed in Patent Document 1 is provided, it is necessary to appropriately unlock the car door when the car stops at a floor. For this reason, for example, it is known that a physical device such as a door zone plate indicating a door zone including a landing position of the car is provided in a hoistway to detect that the car is within the door zone, and then unlock the car door. However, in this case, it is necessary to provide a door zone plate on each floor. In addition, even when the car enters the door zone at a speed that is not sufficiently reduced due to some abnormality, or when the car passes through the door zone of a non-stop floor, the presence of the car in the door zone may be detected, which may unintentionally unlock the car door.

[0005] This disclosure was made to solve these problems. One objective is to provide a technology that allows the elevator car doors to be unlocked when the elevator car is inside the door zone, with a simple configuration, without requiring the installation of physical devices such as door zone plates in the elevator shaft to indicate the door zone, and that can also prevent the elevator car doors from being unintentionally unlocked. [Means for solving the problem]

[0006] The elevator system according to this disclosure comprises: a car that moves up and down within the elevator shaft along a hoisting path; a door provided on the car that opens and closes the entrance to the car; a door locking device that locks the door and mechanically prevents it from moving from the closed position; a sensor that detects the absolute position of the car in the hoisting path; a car control device that controls the movement of the car based on the absolute position of the car detected by the sensor; and a door control device that controls the opening and closing operation of the door and the operation of the door locking device, wherein the car control device determines whether the speed of the car has decreased to or below a reference speed. The device comprises a speed determination unit, a door zone determination unit that determines whether the elevator car is inside the door zone based on the absolute position of the elevator car detected by the sensor, and a signal output unit that outputs a lock release signal to the door control device when the door zone determination unit determines that the elevator car is inside the door zone and the speed determination unit determines that the speed of the elevator car has decreased to or below the reference speed. The door control device comprises a door lock control unit that receives the lock release signal and unlocks the door lock device, and a door opening / closing control unit that opens the door after the door lock device has been unlocked.

[0007] The elevator system control method according to this disclosure comprises: a car that moves up and down within the elevator shaft along a hoisting path; a door provided on the car that opens and closes the entrance to the car; a door lock device that locks the door and mechanically prevents it from moving from the closed position; a sensor that detects the absolute position of the car in the hoisting path; a car control device that controls the movement of the car based on the absolute position of the car detected by the sensor; and a door control device that controls the opening and closing operation of the door and the operation of the door lock device, wherein the speed of the car decreases to below a reference speed. The system includes: a speed determination process to determine whether or not the elevator car is in the door zone; a door zone determination process to determine whether or not the elevator car is in the door zone based on the absolute position of the elevator car detected by the sensor; a signal output process to output a lock release signal when the door zone determination process determines that the elevator car is in the door zone and the speed determination process determines that the speed of the elevator car has decreased to or below the reference speed; a door lock control process to release the lock on the door lock device when the lock release signal is output in the signal output process; and a door opening / closing control process to open the door after the lock on the door lock device has been released.

[0008] The program relating to this disclosure is a program that causes the computer of the elevator system to execute the above-described control method for the elevator system. [Effects of the Invention]

[0009] The technology disclosed herein has the effect of enabling the unlocking of the elevator car doors when the elevator car is inside the door zone with a simple configuration, and also preventing the elevator car doors from being unintentionally unlocked. [Brief explanation of the drawing]

[0010] [Figure 1] This diagram schematically shows the configuration of the elevator in the elevator system according to Embodiment 1. [Figure 2] This is a diagram illustrating the configuration of the main parts of the elevator car according to Embodiment 1. [Figure 3] This is a block diagram showing the configuration of the control system of the elevator system according to Embodiment 1. [Figure 4] This is a flowchart showing an example of the operation of the elevator system according to Embodiment 1. [Figure 5] This diagram illustrates the configuration of the main parts of an elevator car in a modified example of the elevator according to Embodiment 1. [Figure 6] This is a block diagram showing the configuration of the abnormality detection device included in the elevator system according to Embodiment 1. [Figure 7] This is a flowchart showing an example of the operation of a modified version of the elevator system according to Embodiment 1. [Figure 8] This figure shows an example of a configuration that realizes the functions of the elevator car control device and other components of the elevator system according to Embodiment 1. [Modes for carrying out the invention]

[0011] The elevator system, control method for the elevator system, and implementation of the program relating to this disclosure will be described with reference to the attached drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals, and redundant explanations are simplified or omitted as appropriate. For convenience, the positional relationships of each structure may be expressed based on the illustrated state in the following description. This disclosure is not limited to the following embodiments, and any combination of embodiments, any modification of any component of each embodiment, or any omission of any component of each embodiment is possible without departing from the spirit of this disclosure.

[0012] Embodiment 1. Embodiment 1 of this disclosure will be described with reference to Figures 1 to 8. Figure 1 is a schematic diagram showing the configuration of an elevator in an elevator system. Figure 2 is a diagram illustrating the configuration of the main part of the elevator car. Figure 3 is a block diagram showing the configuration of the control system of the elevator system. Figure 4 is a flowchart showing an example of the operation of the elevator system. Figure 5 is a diagram illustrating the configuration of the main part of a modified elevator car. Figure 6 is a block diagram showing the configuration of an abnormality detection device in an elevator system. Figure 7 is a flowchart showing an example of the operation of a modified elevator system. Figure 8 is a diagram showing an example of a configuration that realizes the functions of the elevator car control device, etc.

[0013] As shown in Figure 1, a hoistway 10 is formed in the building where the elevator system according to this embodiment is installed. The elevator comprises a car 20 and a counterweight (not shown). The car 20 and the counterweight are each guided by a guide rail (not shown) and move up and down within the hoistway 10 along the hoistway path. The car 20 is a box-shaped structure for transporting passengers, cargo, etc. The counterweight is a weight used to balance the weight of the car 20.

[0014] A machine room 11 is provided at the top of the elevator shaft 10. A hoisting machine 31 and a car control device 100 are installed inside the machine room 11. The hoisting machine 31 is the power source for raising and lowering the elevator car 20. One end of the main rope 32 is connected to the upper end of the elevator car 20. The other end of the main rope 32 is connected to the upper end of the counterweight. The middle section of the main rope 32 is wrapped around the sheave and deflection wheel of the hoisting machine 31. In this way, the elevator car 20 and the counterweight are suspended in a bucket-like manner within the elevator shaft 10 by the main rope 32, rising and falling in opposite directions. In the configuration example shown in Figure 1, the main rope 32 suspends the elevator car 20 and the counterweight in a 1:1 roping system within the elevator shaft 10. However, the roping system is not limited to this, and other systems such as a 2:1 roping system may also be used. Furthermore, the elevator car control device 100 may be installed in the elevator shaft 10 instead of in the machine room 11.

[0015] The elevator system according to the present embodiment further comprises a position detection device 40. The position detection device 40 includes a sensor that detects the absolute position of the car 20 along the lifting path. In the configuration example described herein, the position detection device 40 comprises a linear scale 41 and a reading unit 42. The linear scale 41 is provided along the lifting path of the car 20. Position information corresponding to the absolute position along the lifting path is recorded on the linear scale 41. The reading unit 42 is provided on the car 20. The reading unit 42 reads the position information from the linear scale 41. The position information read by the reading unit 42 is transmitted to the car control device 100. The recording and reading method for position information in the linear scale 41 and the reading unit 42 may, for example, be a magnetic method using magnetic recording, or may be an optical method.

[0016] A doorway that is an opening is provided on the front face of the car 20. As shown in Figure 2, car door panels 21 that form a pair of left and right car doors are provided at the doorway of the car 20 so as to be openable and closable along a substantially horizontal direction. A door hanger is attached to the upper end of each car door panel 21. A door roller is attached to the upper portion of each of these door hangers. A door rail is attached above the doorway of the car 20. The door rail is attached substantially horizontally along the opening and closing direction of the car door panels 21. A door roller is rollably engaged on the door rail.

[0017] In this way, the pair of left and right car door panels 21 are suspended by the door rail via the door hangers and the door rollers. Then, as the door rollers are guided by the door rail and roll along the door rail, the left and right car door panels 21 open and close the doorway of the car 20.

[0018] A door motor 51 is disposed above the door rail in the car 20. The door motor 51 is a motor that drives the opening and closing of an elevator door. The door motor 51 is disposed above the door rail, on one side along the opening / closing direction of the car door panel 21. One of a pair of left and right pulleys 54 is fixed to the drive shaft of the door motor 51. Further, above the door rail, on the other side along the opening / closing direction of the door panel 3, the other of the pair of left and right pulleys 54 is attached. Among the pair of left and right pulleys 54, the one fixed to the drive shaft of the door motor 51 is a drive pulley. The other pulley 54 is a driven pulley.

[0019] An endless belt 52 is wound around between the pair of pulleys 54. Thus, a winding transmission mechanism in which the rotational drive of the door motor 51 is transmitted to the circulating movement of the belt 52 is configured.

[0020] A connecting portion 53 is attached to the upper end of each car door panel 21. Among these connecting portions 53, the connecting portion 53 provided on one car door panel 21 of the pair of left and right car door panels is locked to one of the upper and lower portions of the belt 52 wound between the pulleys 54. Further, the connecting portion 53 provided on the other car door panel 21 of the pair of left and right car door panels is locked to the other of the upper and lower portions of the belt 52 wound between the pulleys 54. With such a configuration, the rotational drive of the door motor 51 in both forward and reverse directions is converted into the circulating movement of the belt 52 in both directions, and the pair of left and right car door panels 21 move in opposite directions to each other, thereby opening and closing the entrance / exit of the car 20.

[0021] A landing is provided on a floor where the car 20 stops. An entrance / exit, which is an opening, is provided in a wall portion between the landing and the hoistway 10. The entrance / exit of the landing is provided at a position facing the entrance / exit of the car 20 that has stopped at the floor of the landing. At the entrance / exit of the landing, a pair of left and right landing doors are provided so as to be openable and closable along a substantially horizontal direction.

[0022] A coupling device (not shown) is provided on the hoistway 10-side surface of each car door panel 21 and on the hoistway-side surface of the landing door panel. This coupling device consists of, for example, a car-side roller and a landing-side plate. The car-side roller is a roller attached to the end of a rod-shaped member that protrudes toward the hoistway 10-side surface of the door panel. The landing-side plate is a pair of plates that protrude toward the hoistway 10-side surface of the landing door panel. The car-side roller and the landing-side plate are positioned opposite each other when the elevator car 20 stops on a floor.

[0023] When the elevator car 20 stops on the floor, the car-side roller and landing-side plate of the coupling device engage, and the car door panel 21 and the landing door panel are mechanically connected. Then, when the car door panel 21 is opened and closed by the power of the door motor 51, the car door panel 21 and the landing door panel open and close in conjunction as a single unit.

[0024] The elevator car 20 is equipped with a door lock device 60. The door lock device 60 locks the elevator car door panel 21, mechanically preventing it from moving from the closed position. The door lock device 60 comprises, for example, a lock bar and an actuator that moves the lock bar. The lock bar is provided to be movable between a locked position and an unlocked position. When the elevator car door panel 21 is in the closed position, the actuator moves the lock bar to the locked position, engaging the lock bar and the elevator car door panel 21, mechanically preventing the movement of the elevator car door panel 21. Then, when the actuator moves the lock bar to the unlocked position, the engagement between the lock bar and the elevator car door panel 21 is released, and the elevator car door panel 21 becomes movable.

[0025] Above the elevator car 20, there is an overhead car equipment 200. The overhead car equipment 200 includes a door control device. The door control device controls the opening and closing operation of the car door panel 21 and the operation of the door lock device 60. Specifically, the overhead car equipment 200 includes a door opening / closing control device 210 and a door lock control device 220. The door opening / closing control device 210 controls the opening and closing operation of the car door panel 21 by controlling the door drive device 50. For example, the door opening / closing control device 210 opens the car door panel 21 upon receiving a door open signal from the car control device 100.

[0026] The door lock control device 220 controls the operation of the door lock device 60 by controlling the actuator of the door lock device 60. The door lock control device 220 receives a lock signal from the car control device 100 and controls the actuator of the door lock device 60 to move the lock bar of the door lock device 60 to the locked position. The door lock control device 220 also receives an unlock signal from the car control device 100 and controls the actuator of the door lock device 60 to move the lock bar of the door lock device 60 to the unlocked position.

[0027] In this embodiment of the elevator system, the operation of the elevator car 20 is controlled by the car control device 100. As shown in Figure 3, the car control device 100 has the following functional configuration: a landing position memory unit 110, a car travel control unit 120, a speed determination unit 130, a door zone determination unit 140, and a signal output unit 150.

[0028] The landing position memory unit 110 stores the landing position of the elevator car 20 at each floor where the elevator car 20 stops. The elevator car travel control unit 120 controls the operation of the elevator car 20 mainly by controlling the operation of the hoisting machine 31, a braking device (not shown), etc. In this case, the elevator car travel control unit 120 controls the travel and stopping of the elevator car 20 based on the absolute position of the elevator car 20 detected by the position detection device 40. For example, when stopping the elevator car 20 on a floor, the elevator car travel control unit 120 controls the hoisting machine 31 and the braking device, etc. so that the elevator car 20 stops at the landing position of that floor stored in the landing position memory unit 110.

[0029] The speed determination unit 130 determines whether the speed of the elevator car 20 has decreased to or below the reference speed. The reference speed is set in advance to a value of 0 or greater. In other words, the reference speed may be 0. If the reference speed is 0, the speed determination unit 130 determines whether the elevator car 20 has stopped.

[0030] The door zone determination unit 140 determines whether the elevator car 20 is within the door zone based on the absolute position of the elevator car 20 detected by the position detection device 40. That is, the door zone determination unit 140 obtains the absolute position of the elevator car 20 detected by the position detection device 40. The door zone determination unit 140 also obtains the landing position from the landing position storage unit 110 and identifies the door zone. The door zone is set, for example, within a range of a certain distance both above and below the landing position. Then, the door zone determination unit 140 determines whether the absolute position of the elevator car 20 is within the identified door zone.

[0031] The signal output unit 150 outputs a lock release signal to the car-top equipment 200 (door control device) when the door zone determination unit 140 determines that the elevator car 20 is inside the door zone and the speed determination unit 130 determines that the speed of the elevator car 20 has decreased to below the standard speed. The door lock control device 220 of the car-top equipment 200 receives the lock release signal and unlocks the door lock device 60.

[0032] Furthermore, the signal output unit 150 outputs a lock release signal to the car-mounted equipment 200 (door control device), and then outputs a door open signal to the car-mounted equipment 200 (door control device). Upon receiving the door open signal, the door opening / closing control device 210 of the car-mounted equipment 200 controls the door drive device 50 to open the car door panel 21. Therefore, the door opening / closing control device 210 opens the doors of the elevator car 20 after the lock of the door lock device 60 has been released.

[0033] Next, with reference to the flowchart in Figure 4, an example of the operation flow of the elevator system configured as described above will be explained. First, in step S11, the door zone determination unit 140 acquires the absolute position of the elevator car 20 detected by the position detection device 40.

[0034] In the subsequent step S12, the door zone determination unit 140 determines whether the absolute position of the elevator car 20 obtained in step S11 is within the door zone. The speed determination unit 130 also determines whether the speed of the moving elevator car 20 has decreased to or below the reference speed. If at least one of the following is true, the absolute position of the elevator car 20 is not within the door zone, and the speed of the elevator car 20 has not decreased to or below the reference speed, the signal output unit 150 outputs a door lock signal to the car-top equipment 200, and the elevator system returns to step S11 to continue processing.

[0035] On the other hand, if in step S12 it is determined that the absolute position of the elevator car 20 is within the door zone and that the speed of the elevator car 20 has decreased to or below the reference speed, the elevator system then proceeds to step S13. In step S13, the signal output unit 150 outputs a lock release signal to the car-mounted equipment 200 (door control device). The door lock control device 220 of the car-mounted equipment 200 then receives the lock release signal and unlocks the door lock device 60. After step S13, the elevator system proceeds to step S14.

[0036] In step S14, the signal output unit 150 outputs a door open signal to the car-mounted equipment 200 (door control device). Then, in step S15, the door opening / closing control device 210 of the car-mounted equipment 200, having received the door open signal, opens the doors of the elevator car 20. Once the processing in step S15 is completed, the series of operations is finished.

[0037] In step S12, the order in which the door zone determination unit 140 determines whether the absolute position of the elevator car 20 is within the door zone (door zone determination) and the speed determination unit 130 determines whether the speed of the elevator car 20 has decreased to or below the reference speed (speed determination) may be performed. Furthermore, these door zone determination and speed determination may be performed simultaneously.

[0038] If one of the door zone determination and speed determination is performed before the other, the decision of whether or not to perform the remaining determination may be made based on the result of the first determination. That is, the door zone determination unit 140 may, when the speed determination unit 130 determines that the speed of the elevator car 20 has decreased to or below the reference speed, acquire the absolute position of the elevator car 20 detected by the position detection device 40 and determine whether or not the elevator car 20 is inside the door zone. Alternatively, the determination order may be reversed, and the speed determination unit 130 may, when the door zone determination unit 140 determines that the elevator car 20 is inside the door zone, determine whether or not the speed of the elevator car 20 has decreased to or below the reference speed. By doing so, it is not necessary to perform both the door zone determination and speed determination at all times, thus reducing the determination processing load.

[0039] With the elevator system configured as described above, it is possible to determine whether the elevator car 20 is inside the door zone using the absolute position detection result of the elevator car 20 by the position detection device 40, without providing a door zone plate in the hoistway 10 that indicates the door zone including the landing position of the elevator car 20, and to perform the unlocking operation of the door lock device 60 that prohibits the opening of the elevator car 20's doors outside the door zone. Furthermore, in the event that the elevator car 20 enters the door zone while its speed has not decreased sufficiently due to some abnormality, or when the elevator car 20 passes through the door zone of a non-stopping floor, the unlocking of the door lock device 60 can be suppressed, thereby preventing the elevator car 20's doors from opening unintentionally. Therefore, it is possible to unlock the elevator car 20's doors when the elevator car 20 is inside the door zone with a simple configuration, and to suppress the unintentional unlocking of the elevator car 20's doors.

[0040] Next, a modified version of the elevator system according to this embodiment will be described with reference to Figures 5 to 7. This modified version is configured to detect abnormalities in the door lock device 60. In this modified version, as shown in Figure 5, the elevator system further includes a door sensor 55. The door sensor 55 is a sensor that detects the open state of the car door panel 21, that is, the door of the elevator car 20. The door sensor 55 detects, for example, the position of the car door panel 21, that is, the amount the door of the elevator car 20 is open, as the open state of the door of the elevator car 20. Alternatively, for example, the door sensor 55 may detect either or both of the following states as the open state of the door of the elevator car 20: the car door panel 21 being in the fully open position and the car door panel 21 being in the fully closed position.

[0041] Furthermore, in this modified version, the elevator system is further equipped with an abnormality detection device 300 as shown in Figure 6. The abnormality detection device 300 may be provided, for example, in the car control device 100 or in the car-top equipment 200. After the signal output unit 150 outputs a lock release signal and a door open signal, the abnormality detection device 300 uses the detection result of the door sensor 55 to detect an abnormality in the door lock device 60.

[0042] In the illustrated configuration example, the abnormality detection device 300 includes a door opening / closing control monitoring unit 311, a door position monitoring unit 312, and a door lock abnormality detection unit 320. The door opening / closing control monitoring unit 311 monitors the operating status of the door opening / closing control device 210. The door position monitoring unit 312 monitors the position of the elevator car 20's doors using the detection results from the door sensor 55.

[0043] The door lock abnormality detection unit 320 detects abnormalities in the door lock device 60 based on the monitoring results of the door opening / closing control monitoring unit 311 and the door position monitoring unit 312. For example, the door lock abnormality detection unit 320 detects that there is an abnormality in the door lock device 60 when all of the following conditions are met simultaneously.

[0044] The signal output unit 150 output a lock release signal and a door open signal. The door opening / closing control monitoring unit 311 confirmed that the door opening / closing control device 210 was normally outputting a control signal to the door drive device 50 and attempting to open the car door panel 21. The door position monitoring unit 312 confirmed that the cage door panel 21 was not open.

[0045] The abnormality detection device 300 may be configured to detect an abnormality in the door lock device 60 when the above-mentioned conditions are met a specified number of times or more. The specified number of times can be set to any number of times, one or more. If the specified number of times is set to two or more, the door lock device 60 will not be judged to be abnormal if the above-mentioned conditions are met only once, and the signal output unit 150 will output a lock release signal and a door open signal again to attempt to open the door of the elevator car 20. Then, if the specified number of attempts to open the door fail, the door lock abnormality detection unit 320 will detect an abnormality in the door lock device 60.

[0046] The abnormality detection device 300 does not necessarily have to include a door opening / closing control monitoring unit 311. In this case, the door lock abnormality detection unit 320 detects an abnormality in the door lock device 60 based on the monitoring results of the door position monitoring unit 312. Specifically, the door lock abnormality detection unit 320 detects an abnormality in the door lock device 60 when the door position monitoring unit 312 confirms that the car door panel 21 is not open, even though the signal output unit 150 has output a lock release signal and a door open signal.

[0047] Here, even when the door lock device 60 locks the car door panel 21, there is some "play" in the locked state, and the car door panel 21 can move slightly. If the door sensor 55 can detect this "play" in the car door panel 21, the door lock abnormality detection unit 320 may be configured to detect an abnormality in the door lock device 60 when all of the following conditions are met simultaneously.

[0048] The signal output unit 150 output a lock release signal and a door open signal. The door position monitoring unit 312 confirmed that the cage door panel 21 had moved at least by the amount of "play" from the fully closed position. The door position monitoring unit 312 confirmed that the cage door panel 21 had not moved to the fully open position.

[0049] Furthermore, the abnormality detection device 300 may determine if the door lock device 60 is abnormal on multiple different floors. If the car door panel 21 does not open on one floor despite the signal output unit 150 outputting a lock release signal and a door open signal, the cause could be an abnormality such as the door lock device 60 not being released, or an abnormality such as sticking to the landing door on that floor. Therefore, the abnormality detection device 300 may determine that the door lock device 60 is abnormal if the phenomenon of the car door panel 21 not opening despite the signal output unit 150 outputting a lock release signal and a door open signal is observed on multiple different floors.

[0050] Next, with reference to the flowchart in Figure 7, an example of the operation flow of a modified elevator system will be explained. Steps S11 to S14 in Figure 7 are the same as steps S11 to S14 in Figure 4 described above. Therefore, a redundant explanation will be omitted here. In step S14, when the signal output unit 150 outputs a door open signal to the car-top equipment 200 (door control device), the door opening / closing control device 210 of the car-top equipment 200, which has received the door open signal, opens the doors of the elevator car 20. Then, in the following step S15, when the door sensor 55 detects that the doors of the elevator car 20 have opened to the fully open position, the series of operations is completed.

[0051] On the other hand, if the door sensor 55 does not detect in step S15 that the door of the elevator car 20 has opened to the fully open position, the abnormality detection device 300 then proceeds to the process in step S16. In step S16, the door lock abnormality detection unit 320 of the abnormality detection device 300 determines whether or not the door lock device 60 is malfunctioning based on the monitoring results of the door position monitoring unit 312, etc. If it is determined that the door lock device 60 is not malfunctioning, the process returns to step S14 and continues, and the door opening operation is retried.

[0052] On the other hand, if the door lock malfunction detection unit 320 determines in step S16 that the door lock device 60 is malfunctioning, the malfunction detection device 300 then performs the process in step S17. In step S17, the malfunction detection device 300 outputs a malfunction detection signal for the door lock device 60 to the car control device 100 or an external monitoring center, etc. Once the process in step S17 is completed, the series of operations ends.

[0053] Figure 8 shows an example of a configuration that realizes the functions of the car control device 100 and the car-mounted equipment 200 (door control device, i.e., door opening / closing control device 210 and door lock control device 220) in this embodiment. The functions of the car control device 100 and the car-mounted equipment 200 (also referred to in this disclosure as "car control device 100 etc.") are realized, for example, by a processing circuitry. The processing circuitry may include a computer equipped with a processor 401 and memory 402. The processing circuitry may also be dedicated hardware 403. A part of the processing circuitry may be formed as dedicated hardware 403, and the processing circuitry may further include a processor 401 and memory 402. In the example shown in the figure, a part of the processing circuitry is formed as dedicated hardware 403. Also, in the example shown in the figurery, the processing circuitry further includes a processor 401 and memory 402.

[0054] A processing circuit that is partly a dedicated hardware 403 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. If the processing circuit includes at least one processor 401 and at least one memory 402, functions such as the cage control device 100 are realized by software, firmware, or a combination of software and firmware.

[0055] Software and firmware are written as programs and stored in memory 402, which is a storage medium. The processor 401 reads and executes the programs stored in memory 402 to realize the functions of each part. The processor 401 is also called a CPU (Central Processing Unit), central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. Examples of memory 402 include non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, or magnetic disks, flexible disks, optical disks, compact disks, minidiscs, and DVDs.

[0056] In this way, the processing circuit of the cage control device 100 can realize each function of the cage control device 100 through hardware, software, firmware, or a combination thereof. If the processing circuit of the cage control device 100 includes at least a processor 401 and a memory 402, the processor 401 executes a program stored in the memory 402 of the cage control device 100, and the hardware and software of the cage control device 100 work together to realize the functions of each part of the cage control device 100.

[0057] In this disclosure, you may combine any of the embodiments, configurations, and modifications as you see fit, without departing from the spirit of this disclosure. Examples of various aspects of this disclosure are summarized below as an appendix. (Note 1) A car that moves up and down within the elevator shaft along the hoisting path, A door is provided in the aforementioned elevator car to open and close the entrance to the elevator car, A door locking device that locks the door and mechanically prevents it from moving from the closed position, A sensor for detecting the absolute position of the elevator car in the aforementioned elevator path, A car control device that controls the movement of the car based on the absolute position of the car detected by the sensor, The system includes a door control device that controls the opening and closing operation of the door and the operation of the door lock device, The aforementioned cage control device is A speed determination unit that determines whether the speed of the elevator car has decreased to or below the standard speed, A door zone determination unit determines whether or not the elevator car is inside the door zone based on the absolute position of the elevator car detected by the sensor, The system includes a signal output unit that outputs a lock release signal to the door control device when the door zone determination unit determines that the elevator car is within the door zone and the speed determination unit determines that the speed of the elevator car has decreased to or below the reference speed, The aforementioned door control device is A door lock control unit that receives the aforementioned unlock signal and unlocks the door lock device, An elevator system comprising: a door opening / closing control unit that opens the door after the lock on the door lock device is released. (Note 2) The door control device is provided in the elevator car, The car control device is an elevator system as described in Appendix 1, installed in the machine room of the elevator or in the hoistway. (Note 3) The signal output unit, when the door zone determination unit determines that the elevator car is within the door zone, outputs the unlock signal to the door lock control unit and outputs the door open signal to the door open / close control unit. The elevator system according to Appendix 1 or Appendix 2, wherein the door opening / closing control unit opens the door upon receiving the door open signal. (Note 4) A door sensor that detects the open state of the aforementioned door, The elevator system according to Appendix 3, further comprising: an abnormality detection device that detects an abnormality in the door lock device using the detection result of the door sensor after the signal output unit outputs the unlock signal and the door open signal. (Note 5) The elevator system according to any one of the appendices 1 to 4, wherein the door zone determination unit determines, when the speed determination unit determines that the speed of the elevator car has decreased to or below the reference speed, obtains the absolute position of the elevator car detected by the sensor and determines whether or not the elevator car is inside the door zone. (Note 6) The elevator system according to any one of the appendices 1 to 4, wherein the speed determination unit determines whether the speed of the elevator car has decreased to a standard speed or less when the door zone determination unit determines that the elevator car is inside the door zone. (Note 7) A car that moves up and down within the elevator shaft along the hoisting path, A door is provided in the aforementioned elevator car to open and close the entrance to the elevator car, A door locking device that locks the door and mechanically prevents it from moving from the closed position, A sensor for detecting the absolute position of the elevator car in the aforementioned elevator path, A car control device that controls the movement of the car based on the absolute position of the car detected by the sensor, A control method for an elevator system comprising a door control device that controls the opening and closing operation of the door and the operation of the door lock device, A speed determination process that determines whether the speed of the elevator car has decreased to or below the standard speed, A door zone determination process that determines whether or not the elevator car is inside the door zone based on the absolute position of the elevator car detected by the sensor, A signal output process that outputs a lock release signal when the door zone determination process determines that the elevator car is within the door zone, and the speed determination process determines that the speed of the elevator car has decreased to or below the reference speed, A door lock control process that unlocks the door lock device when the unlock signal is output in the signal output process, A control method for an elevator system, comprising a door opening / closing control process that opens the door after the lock on the door lock device has been released. (Note 8) A program for causing the elevator system's computer to execute the elevator system control method described in Appendix 7. [Explanation of Symbols]

[0058] 10 Elevator 11 Machine room 20 car 21 Cage Door Panel 31 Hoisting machine 32 Main rope 40 Position detection device 41 Linear scale 42 Reading section 50 Door drive system 51 Door motor 52 belts 53 Connecting part 54 Pulley 55 Door Sensor 60 Door locking device 100 cage control device 110 Landing position memory unit 120 Car travel control unit 130 Speed ​​judgment section 140 Door Zone Determination Unit 150 Signal output section 200 cage-mounted equipment 210 Door Opening and Closing Control Device 220 Door lock control device 300 Anomaly detection device 311 Door Opening / Closing Control Monitoring Unit 312 Door position monitoring unit 320 Door lock anomaly detection unit 401 Processor 402 memory 403 Dedicated Hardware

Claims

1. A car that moves up and down within the elevator shaft along the hoisting path, A door is provided in the aforementioned elevator car to open and close the entrance to the elevator car, A door locking device that locks the door and mechanically prevents it from moving from the closed position, A sensor for detecting the absolute position of the elevator car in the aforementioned elevator path, A car control device that controls the movement of the car based on the absolute position of the car detected by the sensor, The system includes a door control device that controls the opening and closing operation of the door and the operation of the door lock device, The aforementioned cage control device is A speed determination unit that determines whether the speed of the elevator car has decreased to or below the standard speed, A door zone determination unit determines whether or not the elevator car is inside the door zone based on the absolute position of the elevator car detected by the sensor, The system includes a signal output unit that outputs a lock release signal to the door control device when the door zone determination unit determines that the elevator car is within the door zone and the speed determination unit determines that the speed of the elevator car has decreased to or below the reference speed, The aforementioned door control device is A door lock control unit that receives the aforementioned unlock signal and unlocks the door lock device, An elevator system comprising: a door opening / closing control unit that opens the door after the lock on the door lock device is released.

2. The door control device is provided in the elevator car, The elevator system according to claim 1, wherein the car control device is provided in the machine room of the elevator or in the hoistway.

3. The signal output unit, when the door zone determination unit determines that the elevator car is within the door zone, outputs the unlock signal to the door lock control unit and outputs the door open signal to the door open / close control unit. The elevator system according to claim 1 or 2, wherein the door opening / closing control unit opens the door upon receiving the door open signal.

4. A door sensor that detects the open state of the aforementioned door, The elevator system according to claim 3, further comprising an abnormality detection device that detects an abnormality in the door lock device using the detection result of the door sensor after the signal output unit outputs the unlock signal and the door open signal.

5. The elevator system according to claim 1 or 2, wherein the door zone determination unit, when the speed determination unit determines that the speed of the elevator car has decreased to or below the reference speed, obtains the absolute position of the elevator car detected by the sensor and determines whether or not the elevator car is inside the door zone.

6. The elevator system according to claim 1 or 2, wherein the speed determination unit determines whether the speed of the elevator car has decreased to a reference speed or less when the door zone determination unit determines that the elevator car is inside the door zone.

7. A car that moves up and down within the elevator shaft along the hoisting path, A door is provided in the aforementioned elevator car to open and close the entrance to the elevator car, A door locking device that locks the door and mechanically prevents it from moving from the closed position, A sensor for detecting the absolute position of the elevator car in the aforementioned elevator path, A car control device that controls the movement of the car based on the absolute position of the car detected by the sensor, A control method for an elevator system comprising a door control device that controls the opening and closing operation of the door and the operation of the door lock device, A speed determination process that determines whether the speed of the elevator car has decreased to or below the standard speed, A door zone determination process that determines whether or not the elevator car is inside the door zone based on the absolute position of the elevator car detected by the sensor, A signal output process that outputs a lock release signal when the door zone determination process determines that the elevator car is within the door zone, and the speed determination process determines that the speed of the elevator car has decreased to or below the reference speed, A door lock control process that unlocks the door lock device when the unlock signal is output in the signal output process, A control method for an elevator system, comprising a door opening / closing control process that opens the door after the lock on the door lock device has been released.

8. A program for causing the computer of the elevator system to execute the elevator system control method described in claim 7.

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