JP4486104B2 - Elevator diagnostic operation apparatus and diagnostic operation method - Google Patents

Description

  The present invention relates to an elevator diagnostic operation apparatus and a diagnostic operation method for an elevator that perform a diagnostic operation in order to resume the operation of an elevator after an earthquake control operation.

  In an elevator equipped with an earthquake detector, when an earthquake shake is detected, an earthquake control operation is carried out to rescue passengers such as stopping at the nearest floor according to the magnitude of the earthquake (such as the acceleration of the building). Is done. Depending on the scale of the earthquake, the car or counterweight may be removed from the guide rails in the elevator hoistway, the joints of the guide rail may be distorted, or ropes and cables may be caught on the protrusions in the hoistway. Some abnormalities such as being caught may occur. For this reason, conventionally, when there is a possibility that an abnormality has occurred in the elevator due to the shaking of the earthquake, that is, when an earthquake of a predetermined size or larger is detected, the elevator of the above configuration is operated after the nearest floor stop. The said operation stop state was continued until it was made into the dormant state and the inspection work by the expert engineer (elevator maintenance staff etc.) of an elevator was implemented.

  In such an elevator, when an operation is suspended due to an earthquake, a considerable time is required until normal operation is resumed, and the service is greatly reduced. Therefore, recently, in order to solve the above problems and to reduce the burden on elevator maintenance personnel after an earthquake, diagnostic operation that does not require maintenance work by maintenance personnel after earthquake control operation is performed under specified conditions. An elevator that can be automatically restored when no abnormality is found in the diagnostic operation is also realized.

  In the diagnostic operation, for example, after the control operation at the time of the earthquake is completed, the car is waited for about several minutes for the aftershock countermeasure, and then the earthquake detector is reset first. Then, while the car is running at a speed slower than that during normal operation (hereinafter referred to as “low speed”), the operation of a predetermined device is determined and an abnormality is detected. For example, the torque current of the elevator hoisting machine is measured while the car is running at a low speed, the measured value of the torque current is compared with a predetermined reference pattern, and the presence or absence of abnormality is determined based on the comparison result.

  The hoisting machine has individual differences for each elevator. For this reason, even under the same operating conditions, the torque current of the hoisting machine and the like slightly varies from elevator to elevator. For this reason, conventionally, the same reference pattern is applied to more elevators (winding machines) by setting the width of the reference pattern for determining an abnormality to be larger.

  In addition, as a conventional technique related to a diagnostic operation, there has been proposed one in which a command for starting a diagnostic operation is transmitted from a monitoring center to an elevator in an operation stop state after an earthquake occurs (for example, see Patent Document 1). In this diagnostic operation, the sound is measured while the car is traveling at a low speed, the measured value of the sound is compared with predetermined three reference levels, and the presence / absence of abnormality and the state of abnormality are determined based on the comparison result. It was.

JP-A-6-247657

  If the width of the reference pattern for determining abnormalities during diagnostic operation is set to be large as before, the accuracy of detecting abnormalities deteriorates, and even if abnormalities can be detected, the detection will be delayed and the elevator will be damaged. There was a problem that became larger.

  Further, in order to improve the accuracy of detecting an abnormality during diagnostic operation, a method of setting a reference pattern for each device or learning a reference pattern periodically has been considered. However, in a geared type (for example, worm gear) hoisting machine, etc., torque current etc. fluctuate depending on the environmental temperature, the running condition before the earthquake, etc. There is a large difference in torque current between the case where the diagnosis operation is performed and the case where the diagnosis operation is performed in the daytime when both the temperature and the operation rate are high. For this reason, even if a reference pattern is set for each device or a reference pattern is regularly learned, it is necessary to set a larger reference pattern width, which improves the accuracy of abnormality detection during diagnostic operation. It was very difficult to do.

  The diagnostic operation described in Patent Document 1 simply determines whether or not there is an abnormality by comparing the acoustic measurement value with a predetermined three-stage reference level. I couldn't lead to a practical means.

  The present invention has been made to solve the above-described problems, and its purpose is to set a reference pattern in accordance with the environmental temperature, the running condition before the occurrence of an earthquake, etc. immediately before performing the diagnostic operation. An object of the present invention is to provide an elevator diagnostic driving apparatus and diagnostic driving method capable of greatly improving the accuracy of abnormality detection during diagnostic driving.

The elevator diagnostic operation apparatus according to the present invention performs a predetermined measurement on a predetermined elevator device while running the elevator car after performing an earthquake control operation, and compares the measured value with a reference pattern. a diagnostic operation device for an elevator that performs a diagnosis operation for determining the presence or absence of an elevator abnormality, before the earthquake, a reference pattern storage unit in which the reference pattern corresponding to the device is stored in advance, in a predetermined period after the earthquake a measurement unit for performing a predetermined measurement against the device, the reference patterns stored in the reference pattern storage unit, and, based on the measured values for the devices that are measured by the measurement section, before the start of the diagnostic operation, the device A reference pattern resetting unit that resets a corresponding reference pattern.

In addition, the elevator diagnostic operation device according to the present invention performs a predetermined measurement on a predetermined elevator device while running the elevator car after performing an earthquake control operation, and compares the measured value with a reference pattern. A diagnostic operation apparatus for an elevator that performs a diagnostic operation to determine whether there is an abnormality in the elevator , a reference pattern storage unit in which a reference pattern corresponding to the device is stored in advance before the occurrence of an earthquake, and a predetermined after the occurrence of the earthquake period, performs predetermined measurement against the device, the reference pattern variation amount measuring unit for calculating a difference between the corresponding portion of the reference pattern stored in the reference pattern storage unit and its measured value, the reference pattern variation amount measuring section based on the calculated difference by, by the entire translated reference pattern storage unit to the stored reference patterns, open diagnostic operation Before, but with the reference pattern resetting unit for resetting the reference pattern corresponding to the device, the.

In the elevator diagnostic operation method according to the present invention, after carrying out an earthquake control operation, a predetermined measurement is performed on a predetermined elevator device while running the elevator car, and the measured value is compared with a reference pattern. a diagnostic method for operating an elevator for performing a diagnostic operation to determine the presence or absence of an elevator abnormality, before the earthquake, a step of previously storing a reference pattern corresponding to the device, the reference pattern storage unit, a predetermined after the earthquake the period, and performing a predetermined measurement against the device, the reference pattern stored in the reference pattern storage unit, and, based on the measured values for the measured device in a predetermined period after the earthquake, the start of the diagnosis operation And a step of resetting a reference pattern corresponding to the device.

Further, in the elevator diagnostic operation method according to the present invention, after carrying out the control operation during an earthquake, a predetermined measurement is performed on a predetermined elevator device while running the elevator car, and the measured value is compared with a reference pattern. A diagnostic operation method for an elevator that performs a diagnostic operation to determine whether there is an abnormality in the elevator , the step of storing a reference pattern corresponding to the device in advance in the reference pattern storage unit before the occurrence of the earthquake, and after the occurrence of the earthquake a predetermined period, performs predetermined measurement against the device, the operation and the step of calculating the difference between the corresponding portion of the reference pattern stored in the reference pattern storage unit and its measured value, a predetermined period after the earthquake based on the difference which, by the entire translated reference pattern storage unit to the stored reference pattern, before the start of the diagnosis operation, pairs equipment And re-sets a reference pattern that is those with.

  According to the present invention, by setting the reference pattern according to the environmental temperature, the traveling state before the occurrence of the earthquake, etc. immediately before performing the diagnostic operation, it is possible to greatly improve the abnormality detection accuracy during the diagnostic operation. It becomes like this.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a block diagram showing an elevator diagnostic operation apparatus according to Embodiment 1 of the present invention. The elevator is provided with an earthquake detector, and has a function of performing an earthquake control operation that causes passengers in the car to escape out of the car when an earthquake of a predetermined scale is detected. In addition, when the detected earthquake is larger than the predetermined scale, after the earthquake control operation, the diagnostic operation is performed under the predetermined condition, and if no abnormality is detected in the diagnostic operation, It has a function to restore with.

  In the diagnostic operation, for example, after resetting the seismic detector, measurement is performed on a predetermined elevator device while the car is running, and the presence / absence of abnormality of the device is determined by comparing the measured value with a reference pattern. . In the following, as an example of diagnostic operation, after the earthquake detector is reset, the torque current of the elevator hoisting machine is measured while the car is running at a low speed, and the measured value is compared with the reference pattern. A description will be given of what detects an abnormality when a predetermined threshold is exceeded.

  In FIG. 1, reference numeral 1 denotes a CPU in a control device that controls the entire elevator, and 2 denotes a storage device in the control device. The storage device 2 includes a reference pattern storage unit 3 that stores the reference pattern and a threshold storage unit 4 that stores the threshold value. As described above, the reference pattern is used to determine whether the torque current of the hoisting machine is normal or abnormal during the diagnostic operation.

  The reference pattern storage unit 3 stores in advance a reference pattern corresponding to the torque current of the hoisting machine before the occurrence of the earthquake (hereinafter referred to as a reference pattern stored in the reference pattern storage unit 3 from before the earthquake occurrence). This is also referred to as “standard reference pattern”). This standard reference pattern itself is not a comparison target for the measured value of the torque current of the hoisting machine in the diagnostic operation after the occurrence of the earthquake. That is, a reference pattern corresponding to the torque current of the hoisting machine is newly set (reset) based on the standard reference pattern in a predetermined period after the occurrence of an earthquake and before the start of diagnostic operation. Then, a diagnostic operation is performed based on the reference pattern after resetting. In other words, the reference pattern stored in the reference pattern storage unit 3 is updated to an optimum one according to the ambient environmental temperature, the elevator traveling condition before the occurrence of the earthquake, etc. immediately before starting the diagnostic operation.

  The standard reference pattern can be obtained by performing a learning operation when the elevator is installed. In the learning operation, for example, the torque current of the hoisting machine is measured while traveling in the car at the speed (diagnosis speed) at which the diagnosis operation is actually performed (diagnosis interval), and the measured value (torque current) Data) is stored in the reference pattern storage unit 3. Further, the reference reference pattern may be a calculated value derived by a predetermined calculation formula, for example, even when the learning operation is not performed.

  On the other hand, it is known that the torque current of the hoisting machine fluctuates after installation due to secular change or the like. For example, after the installation, the lubrication state of the guide rail and the guide shoe is gradually improved, so that the torque resistance is reduced by reducing the frictional resistance during traveling. Further, since the lubrication state changes depending on the temperature difference between seasons, the frictional resistance during running changes between summer and winter, and the torque current fluctuates.

  For this reason, the reference reference pattern stored in the reference pattern storage unit 3 is periodically updated after installation of the elevator, and the reference reference pattern stored in the reference pattern storage unit 3 is set to the current elevator as much as possible. It is also effective to keep it close to the state. The update of the standard reference pattern is preferably performed in as short a span as possible. However, in consideration of the operation status of the elevator, it is actually performed in a time zone where there are few passengers such as at night.

  The CPU 1 of the control device includes a reference pattern fluctuation amount measuring unit 5, a reference pattern resetting unit 6, and an abnormal signal detecting unit 7. The reference pattern variation measuring unit 5 measures the variation from the time when the reference pattern corresponding to the torque current of the hoisting machine is stored in the reference pattern storage unit 3 during a predetermined period after the occurrence of the earthquake and before starting the diagnostic operation. To do. That is, the amount of change between the reference pattern stored in the reference pattern storage unit 3 before the occurrence of the earthquake and the reference pattern to be measured in the predetermined period after the occurrence of the earthquake is measured.

  The reference pattern resetting unit 6 performs diagnostic operation based on the reference reference pattern stored in the reference pattern storage unit 3 before the occurrence of the earthquake and the variation amount of the reference pattern obtained in the predetermined period after the occurrence of the earthquake. Before starting the operation, the reference pattern corresponding to the torque current of the hoisting machine is reset to the optimum state (latest state) according to the ambient environmental temperature, the traveling state of the elevator before the earthquake, and the like. The abnormality signal detection unit 7 is for detecting an abnormality of the hoisting machine in the diagnostic operation performed after the occurrence of the earthquake. For example, the measured value of the hoisting machine torque current when the car is running at a low speed and the reference When the difference from the reference pattern reset by the pattern resetting unit 6 exceeds the threshold stored in the threshold storage unit 4, the presence of abnormality is detected. In addition, the control part which controls the control operation at the time of an earthquake, the control part which controls diagnostic operation, etc. are abbreviate | omitted.

  Next, the relationship between the torque current of the elevator hoist and the reference pattern will be specifically described. 2 is a diagram showing the torque current waveform of the elevator hoisting machine, FIG. 3 is a diagram showing an example of fluctuations in the torque current waveform of the elevator hoisting machine, FIG. 4 is a diagram showing the worm gear efficiency during power running, and FIG. It is a figure which shows the worm gear efficiency at the time of a driving | operation.

  FIG. 2 shows the relationship between the torque current of the hoisting machine and the car position when the elevator car runs at a constant speed from the lowest floor to the highest floor. In addition, the above-mentioned lowest floor to the highest floor is used as a normal diagnosis section. The torque current of the hoisting machine when the car travels at a constant speed corresponds to the torque necessary to cancel the unbalance between the car side weight and the counterweight side weight acting on the main rope. This torque is also affected by fluctuations in the car-side weight and the counterweight-side weight acting on the main rope, and is also affected by fluctuations in running resistance due to bending of the guide rails. For example, when the installation accuracy of the guide rail is poor and the running resistance is not constant, the torque current has a waved waveform in the diagnostic section as shown in FIG.

  FIG. 2 shows an actual torque current (actual value of the torque current) and a reference pattern obtained by storing the torque current at regular intervals in the learning operation. If the interval for storing the torque current is shortened (if the memory points are increased), the reference pattern approaches the actual torque current. That is, the accuracy of abnormality detection when the diagnostic operation is performed is improved. As shown in FIG. 2, the difference between the actual torque current and the reference pattern hardly occurs immediately after the reference pattern is recorded. Therefore, when the reference pattern is periodically updated, there is almost no difference between the actual torque current immediately after the update and the reference pattern.

  On the other hand, FIG. 3 shows the relationship between the torque current of the hoisting machine and the car position when the car is driven at the constant speed in the normal diagnosis section. The case where the actual torque current fluctuates is shown. That is, FIG. 3 shows that the actual torque current of the hoisting machine has changed from that indicated by the solid line to that indicated by the broken line due to a change in ambient environmental temperature and a change in the operation state of the elevator. . In addition, short-term fluctuations in the actual torque current of the hoisting machine generally do not change the waveform itself, but simply appear as a parallel movement of the waveform as shown in FIG. This is because the main cause of the fluctuation is due to the efficiency of the hoisting gear.

  4 and 5 show the relationship between the efficiency η and the friction coefficient μ of a general worm gear. 4 and 5, the friction coefficient μ is affected by the viscosity of the lubricating oil used in the gear. In general, the friction coefficient μ decreases as the temperature of the lubricating oil increases, and the friction coefficient μ increases as the temperature of the lubricating oil decreases. In the power running operation shown in FIG. 4, when the temperature of the lubricating oil rises due to the increase in the environmental temperature or the number of operations, and the friction coefficient μ decreases, the gear efficiency η increases. The powering operation refers to the case where the direction of the torque output of the hoisting machine is the same as the direction in which the driving sheave around which the main rope is wound is actually rotated. For example, when there are no passengers in the car, driving to lower the elevator corresponds to power running. And the fluctuation | variation of the efficiency (eta) of the said gear appears as a parallel displacement of the torque current shown in FIG.

  On the other hand, in the regenerative operation shown in FIG. 5, when the temperature of the lubricating oil increases due to the increase in the environmental temperature or the increase in the number of operations, and the friction coefficient μ decreases, the gear efficiency η decreases. The regenerative operation refers to a case where the direction of torque output of the hoisting machine is different from the direction in which the drive sheave actually rotates. For example, when there are no passengers in the car, the operation of raising the elevator corresponds to the regenerative operation.

  As can be seen from FIGS. 4 and 5, the variation of the efficiency η with respect to the variation of the friction coefficient μ is different between the case of power running and the case of regeneration. That is, the actual torque current of the hoisting machine varies in the direction and width of fluctuation shown in FIG. Therefore, the reference pattern change amount measuring unit 5 and the reference pattern resetting unit 6 need to reset the reference pattern immediately before the diagnostic operation in consideration of these points.

  Next, detailed functions and operations of the reference pattern variation measuring unit 5 and the reference pattern resetting unit 6 will be described with reference to the flowchart of FIG. FIG. 6 is a flowchart showing the operation of the elevator diagnostic operation apparatus according to Embodiment 1 of the present invention.

  In FIG. 6, as described above, the reference pattern storage unit 3 stores in advance a reference pattern standard (standard reference pattern) (S1). When an earthquake of a predetermined scale occurs in such a state (S2), the earthquake is detected by the earthquake detector, and an earthquake control operation is carried out to rescue passengers in the car (S3). When the control operation at the time of the earthquake is finished, next, the measurement of the variation amount by the reference pattern variation measurement unit 5 (S4) and the resetting of the reference pattern by the reference pattern resetting unit 6 (S5) are performed.

  Specifically, the reference pattern change amount measuring unit 5 measures the parallel movement amount of the torque current waveform of the hoist shown in FIG. Since the torque current waveform of the hoisting machine simply translates due to changes in the environmental temperature or the like, at least one point (a part of the reference pattern) of the waveform is measured to obtain the amount of variation at the car position. If possible, the entire waveform after fluctuation (the entire reference pattern) can be derived.

  For example, as shown in FIG. 4, the constant speed section after the earthquake control operation is divided into a fluctuation amount measurement section for obtaining the fluctuation amount and a diagnostic section for performing the diagnostic operation, and the fluctuation amount measurement section. Is set to a very short time just before the diagnosis interval. Then, the actual torque current Tr is measured at a predetermined position (cage position) in the variation measurement section, and compared with the torque current Tm at that position (cage position) of the reference reference pattern stored in the reference pattern storage unit 3. Thus, the fluctuation amount ΔTq = Tm−Tr is calculated.

  Next, the reference pattern resetting unit 6 stores, as a reference pattern, a new reference pattern obtained by translating the entire reference reference pattern stored in the reference pattern storage unit 3 by the amount of variation ΔTq. Store in part 3. In the diagnostic operation that is started immediately thereafter, normality and abnormality of the hoisting machine torque current are determined based on the reference pattern newly stored in the reference pattern storage unit 3 (S6, S7).

  If an abnormality is detected in the diagnostic operation, the car is urgently stopped, and the operation is suspended until the inspection work by the elevator maintenance worker is performed (S8). If no abnormality is detected in the diagnostic operation, the elevator is automatically restored and normal operation is resumed (S9).

  According to the first embodiment of the present invention, the reference pattern is reset according to the environmental temperature, the driving condition before the earthquake, etc. immediately before the diagnosis operation after the occurrence of the earthquake. Detection accuracy can be greatly improved.

  It should be noted that the period for resetting the reference pattern after the occurrence of the earthquake, that is, the length of the fluctuation amount measurement section in FIG. 3, is an emergency required for measuring the torque current Tr, calculating the fluctuation quantity ΔT, and translating the standard reference pattern. It is sufficient if a short time can be secured. For this reason, the diagnosis interval set after the fluctuation amount measurement interval is not substantially different from the normal diagnosis interval in FIG. 2, and it is possible to carry out diagnosis in substantially the same region as the normal diagnosis interval. In the above description, the actual torque current is measured only at one point of Tr. However, measurement is performed at a plurality of points (cage positions), and the fluctuation amount ΔTq is derived by using these average values. Also good.

  In the first embodiment, in order to facilitate the measurement of the fluctuation amount, etc., the case where the fluctuation amount is obtained in a constant speed section immediately before the start of the diagnostic operation has been described. The torque current Tr may be measured during acceleration or during an earthquake control operation after the occurrence of an earthquake. Further, it is possible to always measure the torque current at a certain point for every operation of the elevator and monitor the fluctuation amount. In addition, since the above fluctuations are prominent when geared hoisting machines are used, the temperature of the lubricating oil used in the hoisting machines is measured after the earthquake occurs, and the oil temperature is measured in the control unit. The fluctuation amount may be obtained by calculating the efficiency from the value. In such a case, the temperature measurement means for measuring the temperature of the lubricating oil used in the hoisting machine for a predetermined period after the occurrence of the earthquake, and the fluctuation based on the temperature of the lubricating oil measured by the temperature measuring means. It is necessary to provide calculation means for obtaining the quantity.

  In addition, as described above, since the amount of change also varies depending on the operation direction and operation speed of the elevator, when the operation direction and operation speed differ between the diagnostic operation and the measurement of the amount of change, the relationship is controlled in advance. You may make it memorize | store in an apparatus and calculate an exact variation | change_quantity.

It is a block diagram which shows the diagnostic driving | operation apparatus of the elevator in Embodiment 1 of this invention. It is a figure which shows the torque current waveform of an elevator hoisting machine. It is a figure which shows the example of a fluctuation | variation of the torque current waveform of an elevator hoisting machine. It is a figure which shows the worm gear efficiency at the time of power running operation. It is a figure which shows the worm gear efficiency at the time of regenerative operation. It is a flowchart which shows operation | movement of the diagnostic driving | operation apparatus of the elevator in Embodiment 1 of this invention.

Explanation of symbols

1 CPU
2 Storage Device 3 Reference Pattern Storage Unit 4 Threshold Storage Unit 5 Reference Pattern Variation Measurement Unit 6 Reference Pattern Reset Unit 7 Abnormal Signal Detection Unit

Claims (9)

After carrying out the control operation at the time of the earthquake, perform the diagnostic operation to perform the predetermined measurement for the predetermined elevator equipment while running the elevator car and compare the measured value with the reference pattern to determine whether there is an abnormality in the elevator An elevator diagnostic operation device to perform,
Before the occurrence of an earthquake, a reference pattern storage unit in which a reference pattern corresponding to the device is stored in advance,
A predetermined period after the earthquake, a measurement unit for performing a predetermined measurement against the instrument,
Based on the reference pattern stored in the reference pattern storage unit and the measured value for the device measured by the measuring unit, the reference pattern corresponding to the device is reset before starting the diagnostic operation. A resetting unit;
A diagnostic operation apparatus for an elevator, comprising: In diagnostic operation, an elevator diagnostic operation device that measures the torque current of a hoisting machine while traveling a car and compares the measured value with a reference pattern to determine whether there is an abnormality in the elevator,
2. The diagnostic operation apparatus for an elevator according to claim 1, wherein the measuring unit measures a torque current of the hoisting machine when the car is traveling during a predetermined period after the occurrence of the earthquake. After carrying out the control operation at the time of the earthquake, perform the diagnostic operation to perform the predetermined measurement for the predetermined elevator equipment while running the elevator car and compare the measured value with the reference pattern to determine whether there is an abnormality in the elevator An elevator diagnostic operation device to perform,
Before the occurrence of an earthquake, a reference pattern storage unit in which a reference pattern corresponding to the device is stored in advance,
A predetermined period after the earthquake, performs the predetermined measurement against the device, the reference pattern variation amount measuring unit for calculating a difference between the corresponding portion of the reference pattern stored in the reference pattern storage unit and the measured value When,
Referred to based on the difference computed by said reference pattern variation amount measuring section, by translating the entire reference pattern stored in the reference pattern storage section, prior to the start of the diagnosis operation, corresponding to the device A reference pattern resetting unit for resetting a pattern;
A diagnostic operation apparatus for an elevator, comprising: In the diagnostic operation, while running the car to measure the torque current of the hoisting machine, by comparing the reference pattern and the measured values, a diagnostic operation device for an elevator to determine the presence or absence of an elevator abnormality,
It said reference pattern variation amount measuring unit, in a predetermined period after the earthquake, the torque current of the hoisting machine during travel of the cage is measured and the reference pattern stored in the reference pattern storage unit and the measured value 4. The elevator diagnostic operation apparatus according to claim 3 , wherein a difference from the corresponding portion is calculated. After carrying out the control operation at the time of the earthquake, perform the diagnostic operation to perform the predetermined measurement for the predetermined elevator equipment while running the elevator car and compare the measured value with the reference pattern to determine whether there is an abnormality in the elevator An elevator diagnostic driving method to be performed,
Before an earthquake occurs, storing a reference pattern corresponding to the device in a reference pattern storage unit in advance;
A predetermined period after the earthquake, and performing the predetermined measurement against the instrument,
Based on the reference pattern stored in the reference pattern storage unit and the actual measurement value measured for the device during the predetermined period after the occurrence of the earthquake, the reference pattern corresponding to the device is regenerated before the start of the diagnostic operation. Steps to set,
A diagnostic operation method for an elevator, comprising: After carrying out the control operation at the time of the earthquake, perform the diagnostic operation to perform the predetermined measurement for the predetermined elevator equipment while running the elevator car and compare the measured value with the reference pattern to determine whether there is an abnormality in the elevator An elevator diagnostic driving method to be performed,
Before an earthquake occurs, storing a reference pattern corresponding to the device in a reference pattern storage unit in advance;
A step of computing a difference between the predetermined period after the earthquake, performs the predetermined measurement against the device, the corresponding portion of the reference pattern stored in the reference pattern storage unit and its measured value,
Based on the difference calculated in the predetermined period after the earthquake, by translating the entire reference pattern stored in the reference pattern storage section, prior to the start of the diagnosis operation corresponding to the device Resetting the reference pattern;
A diagnostic operation method for an elevator, comprising: The diagnostic operation method for an elevator according to claim 5 or 6, wherein the predetermined period after the occurrence of the earthquake that obtains the difference by calculation is a predetermined period during the control operation during an earthquake. The elevator according to claim 5 or 6, wherein the predetermined period after the occurrence of the earthquake that obtains the difference by calculation is a predetermined period after the control operation during the earthquake and before the start of the diagnostic operation. Diagnostic driving method. After the control operation during the earthquake, the car is run at a constant speed to reset the reference pattern corresponding to the device, and the diagnostic operation is started while the car is running at the constant speed. The elevator diagnostic operation method according to claim 8, wherein:

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