JP5442679B2 - Elevator control device - Google Patents

Description

  The present invention relates to an elevator in which a car moves up and down in a hoistway, and in particular, an elevator control suitable for grasping an abnormal location of landing accuracy when the car is landing toward a floor planned for landing. It relates to the device.

  In an elevator, a car position is conventionally detected in a hoistway. In order to prevent cost increase and reliability deterioration and improve landing accuracy, for example, a plurality of position detection sensors provided on the car side and a plurality of detection objects provided on the landing side Thus, when the position of the car reaches a lift position where the door can be opened and closed, a door zone indicating a region where the passenger can get on and off is detected. Then, the position of the car is estimated by counting with a microcomputer based on the number of output pulses of a pulse generator that generates pulses according to the raising and lowering of the car, and further, various control quantities are calculated, By aligning the floor surface with the floor surface of the platform, the floor can be landed with little level deviation.

  In other words, the detection timing of the position detection sensor provided on the car side and the detected object provided on the hoistway side is subject to an abnormality such as a work failure when the detected object is attached or the occurrence of an earthquake. If the landing error increases due to a shift in the attachment position of the detection body, the elevator user may fall over when getting on and off.

  Therefore, normally, when a stop operation is performed on each floor in the maintenance operation state for the purpose of inspection, an abnormal location is determined by visual confirmation of maintenance personnel. For this reason, a long time is required for the maintenance work.

  In addition, as disclosed in Patent Document 1, when a plurality of car detection switches (limit switches) provided in the vicinity of the terminal floor are operated outside a normal operation section, there is one that determines a switch abnormality. Are known.

JP 2008-7322 A

  The prior art disclosed in Patent Document 1 is an abnormality determination method that can be adopted only when the car detection switch is disposed at a position where a normal operation section can be set, and is disposed at many positions on the hoistway. An abnormality in the car detection switch cannot be determined.

  Further, when an attempt is made to determine the abnormality of many car detection switches due to the extension of this method, the system configuration becomes complicated, and at the same time, labor required for maintenance work increases.

  The objective of this invention is providing the control apparatus for elevators which can identify the abnormal location of landing accuracy at a glance, for example at the time of the inspection work of an elevator, without adding a special apparatus.

  Therefore, it is an object of the present invention to provide an elevator abnormality detection device that can shorten the inspection work time at the time of restoration in the event of a disaster such as an earthquake, and consequently reduce the elevator downtime.

  In one aspect of the present invention, the position detection sensor includes a position detection sensor mounted on a car, and a detected object that is arranged corresponding to each stop floor in the hoistway and is detected by the position detection sensor. In the elevator control device that detects the position of the car based on the output signal of the sensor, the position detection sensor is mounted on the car so as to pass through a position facing the detected body, and is provided in parallel. Four sensor units are provided, and the detected objects are arranged at a plurality of positions in the hoistway, and each of them is simultaneously detected by at least two of the four sensor units arranged in parallel under the cage. A plurality of detected units, and responding to a deviation in output timing of at least two sensor units in the position detection sensor. And detecting an abnormality Te.

  In an embodiment of the present invention, when an abnormality is detected according to the deviation of the output timing of the sensor unit, if the elevator door is open, an announcement is made that there is a step on the floor, and the elevator door It is desirable to sound a buzzer when closing.

  In a preferred embodiment of the present invention, the landing error of the elevator is detected according to the first deviation of the output timing of the position detection sensor, and the first deviation larger than the first deviation of the output timing of the position detection sensor is detected. The operation of the elevator is stopped according to the deviation of 2.

  According to a preferred embodiment of the present invention, it is possible to detect a car position detection abnormality with a desired accuracy such that an abnormality occurs in a landing error that is an error between a landing floor surface and a car-side floor surface of each floor. it can.

  Further, according to a preferred embodiment of the present invention, an abnormal landing accuracy of an elevator can be easily recognized even by a non-expert, for example, a building owner.

  For this reason, when a disaster such as an earthquake occurs, the inspection work time can be shortened, and the elevator downtime can be greatly reduced.

  Other objects and features of the present invention will be made clear in the embodiments described below.

It is a whole block diagram of the elevator apparatus provided with the control apparatus for elevators by one Example of this invention. It is a perspective view which shows the to-be-detected body arrange | positioned at the position detection sensor mounted in a passenger car, and a landing threshold part which comprises the control apparatus for elevators by one Example of this invention. It is a figure which illustrates the combination pattern of the to-be-detected unit of the to-be-detected body of each floor by the one Example of this invention, and the position detection sensor output under a cage | basket | car. It is a figure which shows the schematic structure of the safety controller by one Example of this invention, and the connection of a position detection sensor. It is a figure which illustrates the operation locus of the elevator for explaining operation by one example of the present invention. It is a figure which illustrates the transition of the combination pattern of a position detection sensor output for demonstrating the operation | movement by one Example of this invention. It is a processing flowchart of the safety controller in the control apparatus for elevators by one Example of this invention. FIG. 8 is a process flow diagram illustrating details of specific process steps in FIG. 7.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is an overall configuration diagram of an elevator apparatus including an elevator control apparatus according to an embodiment of the present invention. Here, the overall configuration of an electronic safety-compatible elevator including a safety system that has been converted into electronic parts and software from a safety system that has conventionally been configured by mechanical elements is shown.

  The car 1 moves up and down in the hoistway when the motor 2 drives the main rope 10 to which the counterweight 11 is connected. The motor 2 is driven by an inverter 5 connected to an AC power source 7 via a cutoff circuit 6. When the operation of the car door switch 70 or the landing door switches 71 to 73 on the floor where the car is not present is detected while the car is moving, the shut-off circuit 6 is activated for safety to the motor 2. Cut off the power supply. As a result, the driving force of the motor 2 is lost and the hoisting machine brake 3 is activated. The hoisting machine brake 3 is a normally operated type in which the brake is released by energization.

  The governor rope 12 is pulled with the movement of the car 1 and rotates the governor 13. The governor 13 includes a gripping device 14 and a rotary encoder 21. When the gripping device 14 is operated, the governor 13 grips the governor rope 12, and if the car 1 is moving at that time, the emergency stop device 15 sandwiches the rail 16 so as to ride. Stop the car suddenly. The rotary encoder 21 rotates with the governor 13 to generate a pulse signal. The amount of change of the pulse signal is integrated to calculate the position of the car 1 and the time average of the amount of change to determine the speed of the car 1, which is used for control.

  A position detection sensor 80 is mounted on the car 1. When the car 1 arrives at the destination floor, the position detection sensor 80 changes the output by facing the detected bodies 81 to 83 installed on the destination floor on the hoistway side. A signal corresponding to the stop position (door openable zone) is sent to the safety controller 40.

  A shock absorber 17 is installed at the lower end of the hoistway. Even when the car 1 cannot be stopped completely by the braking force of the hoisting machine brake 3 or the emergency stop device 15, the car 1 is received and absorbs the shock.

  Final limit switches 22 and 23 are provided near the lower end and the upper end of the hoistway. Although these switches are always in an off state, they are turned on when the car 1 enters below and above each switch, and detects that the position of the car 1 has exceeded the normal operating range.

  A control controller 30 and a safety controller 40 are provided in the electronic safety-compatible elevator control device 50 near the hoistway. Here, the controller 30 controls the inverter 5 to operate the car 1 using the input information of the destination floor buttons and the landing buttons 61 to 63 in the in-car operation panel 60 with a car position indicator. On the other hand, the safety controller 40 inputs the outputs of the rotary encoder 21 and the final limit switches 22 and 23 to detect an event such as an excessive speed or excessive position of the car according to a predetermined position, and the hoisting machine brake 3, The car 1 is braked by the safety device 15 via the interrupting circuit 6 and the gripping device 14.

  FIG. 2 is a perspective view showing a position detection sensor mounted on a passenger car and an object to be detected disposed on a landing sill, which constitute an elevator control apparatus according to an embodiment of the present invention.

  FIG. 2A is a perspective view and a plan view of the position detection sensor 80 mounted on the car 1. The position detection sensor 80 has a configuration in which four sensor units 80 </ b> A to 80 </ b> D are arranged in parallel to detect the detection objects 81 to 83 to be described below. Here, an example using photoelectric sensors is shown, and four uniaxial photoelectric sensors are arranged in parallel under the car. Reference numerals 80a to 80d denote light beams of the respective photoelectric sensor units, which are shielded from light by the entry of the detection unit of the detection target described below.

  2 (B) to 2 (D) are perspective views showing detected bodies 81 to 83 arranged at the landing thresholds on each floor. Reference numerals 81e to 83e denote landing thresholds, to which detected bodies 81 to 83 made of plastic or the like are attached.

  The configuration of the position detection sensor 80 under the car in FIG. 2A shows a case of four sensors 80A to 80D as a specific example, and the output of each sensor unit 80A to 80D is within the elevator controller 50. To the safety controller 40. The safety controller 40 includes a microcomputer that performs a logical operation, and detects a stop position (door openable zone) or the like on each floor by the operation.

  On the other hand, the detected objects 81 to 83 on the hoistway side detected by the position detection sensor 80 are configured by four detected units (for example, shielding plates) 81a to 81d, 82a to 82d, and 83a to 83d, respectively. The positions of the four detected units are respectively arranged corresponding to the positions of the four sensor units of the position detection sensor 80 under the car. If there is a detected unit, the light emitting part of the sensor unit to the light receiving part. The light beam is interrupted. The lengths of the detected bodies 81 to 83 in the vertical direction are matched with the door zones that can open and close the doors at the landings on each floor.

  FIG. 3 is a diagram illustrating a combination pattern of a detected unit of a detected object on each floor and a position detection sensor output under a car according to an embodiment of the present invention. As an example of the case where there are four sensor units in the position detection sensor 80 of FIG. 2, the detected object 81 for identifying the door zone of each floor from the first floor to the fifth floor and for identifying the upper and lower terminal floors. The example of a structure of the to-be-detected unit in -83 is shown.

  The detected object 81 in FIG. 2B attached to the first floor landing sill 81e is detected by the sensor units 80C and 80D when the car 1 is at the normal stop position on the first floor. The light is blocked by the units 81c and 81d, and the output of the position detection sensor 80 is “0, 0, 1, 1” as shown at the right end of FIG.

  In this embodiment, the detected object 81 attached to the first floor landing sill 81e also functions as a lower terminal floor identification function. That is, when the car 1 descends to the lower end of the door zone of the first floor landing, the sensor units 80A to 80D are shielded by the detected units 81a to 81d, respectively, and identify that they are approaching the lower terminal floor. Therefore, the output pattern of the position detection sensor 80 is “1, 1, 1, 1” as shown at the right end of FIG. In order to identify that the user is approaching the lower terminal floor, the fact that the pattern “0, 0, 1, 1” indicating that the user was on the first floor has changed to this pattern “1, 1, 1, 1” Add to identification conditions.

  The to-be-detected body 82 in FIG. 2C attached to the sill 82e of the third-floor landing is that when the car 1 is in the third-floor door zone, the sensor units 80A and 80D are The light is shielded by 82d. Therefore, the output pattern of the position detection sensor 80 is “1, 0, 0, 1” as shown at the right end of FIG.

  The detected object 83 in FIG. 2 (D) attached to the threshold 83e on the fifth floor is that the sensor units 80A and 80B are detected when the car 1 is at the regular stop position on the fifth floor. Light is shielded by the units 83a and 83b. Therefore, the output pattern of the position detection sensor 80 is “1, 1, 0, 0” as shown at the right end of FIG.

  Further, in this embodiment, the detected object 83 attached to the threshold 83e of the 5th floor landing also serves as an upper terminal floor identification function. That is, when the car 1 rises to the upper end of the door zone of the fifth floor landing, the sensor units 80A to 80D are shielded by the detected units 83a to 83d, respectively, and identify that they are approaching the upper terminal floor. In order to identify that the terminal is approaching the upper terminal floor, the fact that the pattern “1, 1, 0, 0” indicating that the user has been on the fifth floor is changed to this pattern “1, 1, 1, 1”. In addition to the conditions, the above-mentioned lower terminal floor is distinguished.

  In FIG. 3, when the car is in the door zone on the second floor, the sensor units 80B and 80D are shielded from light by the undetected b-row and d-row detected units, and the output of the position detection sensor 80 It is clear that the pattern is “0, 1, 0, 1”. Similarly, when the car is in the door zone on the fourth floor, the sensor units 80A and 80C are shielded from light by the undetected units a and c, and the output pattern of the position detection sensor 80 is “ It is clear that “1, 0, 1, 0”.

  As described above, the configuration of the detection object corresponding to the position detection sensor 80 is configured to output a specific combination pattern at a specific position called each floor. For this reason, each floor can be identified by recognizing a specific combination pattern by the safety controller 40.

  Further, depending on the shape of the detected object, as described above, for example, it is possible to provide a limit switch function for detecting an overrun at the terminal floor.

  Here, as is apparent from FIGS. 2 and 3, if the detected units of the detected bodies 81 to 83 in one embodiment of the present invention are normal, there are always two detected units at the same time ( The plurality of sensor units are arranged so as to be detected. This is used for the principle of abnormality detection by the safety controller described later.

  FIG. 4 is a diagram showing a schematic configuration of a safety controller according to an embodiment of the present invention and a connection between position detection sensors. The safety controller 40 is configured by a microcomputer, and the output of the position detection sensor 80 is input to each. The two microcomputers constitute a mutual abnormality diagnosis system that detects a software error and a hardware error by comparing each other.

  The safety controller 40 outputs to the control controller 30 a door openable zone, a sensor failure detection, and a result signal reaching a specific position, and when the safety controller 40 itself stops the elevator operation. In addition to the output for executing the power-off and brake operation command, an output signal for notifying the controller 30 that the power-off process has been executed is transmitted.

  FIG. 5 is a diagram illustrating an operation track of an elevator for explaining an operation according to an embodiment of the present invention. For example, it is an operation trajectory when one elevator departs from the second floor, temporarily stops on the third floor, and departs to the fourth floor in an arbitrary time zone. Taking this travel trajectory as an example, an abnormality detection operation according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 6 is a diagram illustrating a transition of a combination pattern of position detection sensor outputs corresponding to the case of FIG. 5 for explaining the operation according to the embodiment of the present invention.

  Now, referring to FIG. 3 and FIG. 5, when the elevator car passes the second floor and then stops on the third floor and then rises toward the fourth floor, for example, once every 10 [ms]. Consider the transition of the output pattern when the output pattern of the position detection sensor is monitored at the frequency of. Then, if normal, the transition of the output pattern of the position detection sensor as in case 1 of FIG. 6 is obtained. That is, if there is no object to be detected, the output pattern of the position detection sensor is “0, 0, 0, 0”. When the object to be detected comes to a certain position, two detected units are detected simultaneously, When the detected object leaves from a certain position, the two detected units are not detected at the same time.

  Case 1 in FIG. 6 is the sensor output pattern (1, 0, 0, 1) shown in FIG. 3 when arriving on the third floor (in the door zone where the door can be opened), and is detected without installation errors. The transition of the sensor output pattern by the operation locus of FIG. 5 when it is a body state is shown. As shown in this figure, the sensor output immediately before the elevator reaches the third floor is the first (0, 0, 0, 0) from the front in case 1, and immediately after reaching the third floor, the second sensor output. (1, 0, 0, 1) shown. After that, since the elevator heads to the 4th floor, the sensor output keeps (1,0,0,1) shown in the 4th position until just before leaving the 3rd floor, and the 3rd position from the back immediately after leaving the 3rd floor. (0, 0, 0, 0) shown below.

  Next, Case 2 and Case 3 to be described are cases where there is an attachment error. For example, Case 2 shows a state where there is a slight error because there is a tilt or a deviation in the mounting state of the detected unit where two sensor units should be sensed simultaneously.

  As shown in the figure, when the time point when the elevator reaches the third floor is the current diagnosis cycle, the code (a) is next to the output pattern (0, 0, 0, 0) which is the first one before the next. The second output pattern (0, 0, 0, 1) that is not supposed to be present appears. After that, the normal output (1, 0, 0, 1) is the third from the front, but when the elevator leaves the third floor, the code should not be originally ( The output pattern (1, 0, 0, 0) shown in b) appears.

  In case 3, the installation state is considerably poor, that is, the floor level difference at the time of landing is large, and there is a risk of passengers falling over. The output is the same as the second and third output patterns (0, 0, 0, 1) from before the code (c), followed by the third normal pattern (1, 0, 0, 1). Furthermore, since the elevator heads to the upper floor, the abnormal output pattern (1, 0, 0, 0) indicated by the symbol (d) is detected twice when leaving the third floor.

  By knowing such abnormal output patterns (a) to (d) of the position detection sensor 80, it is possible to know an error in detecting the position of the car, including an error in the arrangement of the detected units and a failure of the position detection sensor 80 itself. Can do. However, as in the case 2, in the slight deviation in which the abnormal pattern (a) or (b) appears only in one diagnostic cycle (for example, 10 [ms]), the landing error of the car is negligible. Suppose there is. In this case, it is sufficient to detect a deviation in which an abnormal pattern (c) or (d) appears over two diagnostic cycles (for example, 20 [ms]) as in Case 2. Hereinafter, an embodiment in which abnormality detection is performed based on such a concept will be described.

  FIG. 7 is a process flow diagram of the safety controller in the elevator abnormality detection device according to one embodiment of the present invention. Here, as shown in FIGS. 2 and 3, it is assumed that the number of sensor units of the position detection sensor 80 is four and the number of detected units of the detected bodies 81 to 83 is two or four. Then, as described above, when the first allowable operation time indicating the landing accuracy without causing the passenger to fall is set to one diagnosis cycle (for example, 10 [ms]) when getting on and off the elevator, FIG. The flow of processing of the safety controller 30 is shown.

  First, in step 701, the output of the current position detection sensor is stored in a temporary storage area, and the process proceeds to step 702, where it is determined whether at least one of the four sensor units has been detected. If it has been detected, the process proceeds to step 703. On the other hand, if not detected, the process proceeds to steps 710 to 712, where the process of determining the state of the position detection sensor and preparing for the next process is performed, and the process ends.

  In step 703, it is determined whether or not the stored value in the temporary storage area matches a specific combination pattern. If they match, it is checked whether or not the door zone is already open. Then, the process proceeds to step 704 or 705. If it is determined in step 703 that there is a mismatch, the process proceeds to step 707, where the position detection sensor has detected the last time and the previous time, and the stored value in the previous position detection sensor storage area does not match the specific combination pattern. In this case, the abnormality continues for two diagnostic cycles (for example, 20 [ms]). For this reason, since there is a possibility of causing an landing error that may cause the user to fall, in Step 708, it is determined that the position detection sensor includes an attachment deviation of the detected object, and the cutoff circuit 6 is activated. The car is stopped to ensure safety and the process proceeds to Step 710.

  In step 704, the previous state of the position detection sensor is determined. If there is no detection, the process proceeds to step 705 and the position detection sensor is determined to be normal. This step shows case 1 “sensor state without attachment position error” in FIG.

  If it is detected in step 704, the process proceeds to step 706, and if it is not detected by the previous position detection sensor, that is, it is detected within the first allowable operation time of case 2 in FIG. The process proceeds from step 709 to steps 710 to 712.

  In addition, if the position detection sensor is detected two times before in step 706, a deviation over two diagnostic cycles is detected, which may cause a landing error that may cause the user to fall. Accordingly, the process proceeds to step 708 as in step 707, the cutoff circuit 6 is activated, the car is stopped, safety is ensured, and the process proceeds to steps 710 to 712.

  In step 710, the state of the position detection sensor is output to the control controller, and the control controller notifies the abnormal location. For example, when a maintenance engineer operates a maintenance switch to start a maintenance operation, the operation of this maintenance switch is detected, and the destination floor in the car corresponding to the landing where the abnormality is detected in the position detection device is detected. By flashing the button, it is possible to notify the platform where the landing abnormality occurs.

  The series of processes described above are periodically started using a CPU timer in the safety controller and diagnosed. For this reason, even if a plurality of allowable operation times are set, the processing load is minimized, and the landing error can be easily and quickly detected. For example, when the processing of FIG. 7 is started at a cycle of 10 [ms], the output of the previous position detection sensor shows a pattern of 10 [ms] before, and the output of the previous position detection sensor shows a pattern of 20 [ms] before. Depending on the operation speed of the elevator, an error within one diagnosis cycle can often be ignored as a landing error.

  FIG. 8 is a process flow diagram illustrating details of process step 708 in FIG.

  First, in step 801, it is determined whether or not a position detection sensor abnormality is detected including a displacement of the attachment position of the detected object. If an abnormality is detected, the processing according to the door open state of the elevator is executed in the flow of steps 802 to 804, and after the door is closed in step 805, the elevator moves to the normal floor and automatically lands.

  In Step 806, as preparations for Steps 807 to 813, after the door is opened, the in-car illumination is turned off and the open button is turned on to guide the passengers in the car to get off.

  Steps 807 to 811 are processes for causing passengers trapped in the car to get off on a normal floor and stopping the elevator after the door is closed. If the door opening button in the car is not pressed in step 810, the elevator operation is stopped in step 812, and the operation is stopped in step 813 until an inspection operation by a maintenance worker or the like is detected. To continue and return to step 810 to prevent passengers from being trapped in the car.

  As described above, according to the embodiment of the present invention, an abnormality in the car position detecting device that causes an abnormality in the landing error that is an error between each floor surface and the car-side floor surface can be obtained with a desired accuracy. Can be detected.

  In addition, if an abnormality in the car position detection device that causes an abnormality in landing error is detected, the user is informed that there is a step, thereby preventing a risk of falling or the like. be able to.

  In addition, when an abnormality in the car position detection device that causes an abnormality in landing error is detected, the elevator is automatically stopped and the operation can be resumed after inspection by maintenance personnel. Safe driving can be realized.

  In particular, in the above-described preferred embodiment of the present invention, when an abnormality is detected, it is possible to notify by an announcement or buzzer without providing a dedicated display device to identify the abnormal part, so that a person other than an expert For example, a building owner or the like can easily grasp an abnormal floor with an abnormal landing accuracy at a glance.

  Furthermore, the inspection work time at the time of disaster such as an earthquake can be shortened, and the effect that the elevator downtime can be greatly reduced can be expected.

  DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Motor, 3 ... Hoisting machine brake, 5 ... Inverter, 6 ... Shut-off circuit, 7 ... AC power supply, 10 ... Main rope, 11 ... Counterweight, 12 ... Governor rope, 13 ... Governor, 14 ... Gripping device, 15 ... Emergency stop device, 16 ... Rail, 17 ... Shock absorber, 21 ... Rotary encoder, 22, 23 ... Final limit switch, 30 ... Control controller, 40 ... Safety controller, 50 ... Elevator control device, 61-63 ... landing button, 70 ... car door switch, 71 to 73 ... landing door switch on floor without car, 80 ... position detection sensor (photoelectric sensor), 80A to 80D ... sensor unit, 80a to 80d ... each photoelectric sensor Light beam of unit, 81 to 83 ... detected object (shielding body) on the hoistway side, 81a to 81d, 82a, 2d, 83a to 83d ... the sensor unit (shielding plate).

Claims (7)

A position detection sensor mounted on the car, and a detected object that is arranged corresponding to each stop floor in the hoistway and that is detected by the position detection sensor. In the elevator control device that detects the position of the car,
The position detection sensor is mounted on the car so as to pass through a position facing the detected body, and includes at least four sensor units arranged in parallel.
The detected bodies are arranged at a plurality of positions in a hoistway, and each of the detected bodies is simultaneously detected by at least two sensor units of the four sensor units arranged in parallel under the car. With
An elevator that periodically monitors a deviation in output timing of the plurality of sensor units in the position detection sensor by a timer interruption, and detects an abnormality in accordance with a deviation in output timing of at least two of the sensor units. Control device.   In Claim 1, when abnormality is detected according to the deviation of the output timing of at least two of the sensor units in the position detection sensor, there is a step on the floor if the door of the elevator is open. An elevator control device characterized in that an announcement is made.   3. The elevator control device according to claim 1, wherein a buzzer is sounded when the elevator door is closed after detecting an abnormality in accordance with a deviation in output timing of the sensor unit. 4.   In any one of Claims 1-3, the landing error of an elevator is detected according to the 1st shift | offset | difference of the output timing of several said sensor units, From the said 1st shift | offset | difference of the output timing of several said sensor units An elevator control device that stops the operation of the elevator in response to a large second deviation. 2. The first shift of the output timing between the sensor units according to claim 1 , wherein the first shift of the output timing between the plurality of sensor units is detected in response to being within a first predetermined monitoring period. An elevator control device that stops the operation of the elevator according to a second monitoring period longer than the first predetermined monitoring period. In any one of Claims 1-5 , when abnormality is detected according to the shift | offset | difference of the output timing of the at least 2 said sensor unit in the said position detection sensor, an elevator is driven toward another floor, The said position detection An elevator control device that stops operation of an elevator at a floor where no abnormality is detected in accordance with a deviation in output timing of a sensor unit in the sensor. In any the claims 1 to 6, the abnormality was detected in response to the deviation of the output timing of the plurality of sensor units of the position within the detection sensor, when a predetermined switch is detected that the operation to detect the abnormal An elevator control device that notifies a floor by a destination floor button in a car corresponding to the floor in which an abnormality is detected.

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