JP6780614B2 - Elevator operation control system - Google Patents

Description

The present invention relates to an elevator operation control system that controls the restart of operation of an elevator that has stopped due to the occurrence of shaking.

As disclosed in Patent Document 1 below, conventionally, there is an elevator provided with an automatic diagnosis temporary restoration operation function. The automatic diagnosis temporary restoration operation function mechanically diagnoses the risk of damage to elevator equipment in order to ensure the convenience of movement within the building at an early stage until restoration by a professional engineer (maintenance staff). , It is a function to temporarily restore.

In addition, conventionally, the condition for performing the automatic diagnosis temporary restoration operation is that the seismic detector (particularly, the S-wave detector) does not detect shaking (acceleration) exceeding a predetermined set value. There is. This setting value considers only the strength design of the building (referred to as "[diagnosis] setting"), or considers the strength design of the building and the amplitude expansion of ropes ("[high] setting"). It is called, and is generally set in the seismic detector as [diagnosis] setting or less).

Japanese Unexamined Patent Publication No. 2008-266006 (published on November 6, 2008)

With conventional elevators, if the above conditions cannot be met, operation cannot be resumed without inspection by a specialist engineer. That is, if the above conditions cannot be met, the elevator remains stopped until it is inspected by a professional engineer. For this reason, if a situation occurs in which a large number of elevators cannot meet the above conditions (for example, in the event of a large earthquake), if all of these elevators are inspected by a professional engineer and then restarted, the elevators will be restarted. As the restart of operation is delayed, the burden on professional engineers also increases.

In view of the above problems, one aspect of the present invention is to provide an elevator operation control system capable of promptly restarting the operation of an elevator stopped due to the occurrence of shaking and reducing the burden on a professional engineer. To do.

In order to solve the above problems, in the elevator operation control system according to one aspect of the present invention, the magnitude of the shaking is set for prohibiting the execution of the automatic diagnosis temporary recovery operation for the elevator in which the shaking has occurred. A detector that detects that the value is equal to or higher than the value, a detector that detects an event other than the magnitude of the shaking that may affect the degree of damage to the elevator due to the occurrence of the shaking, and the sensor having the set value. Even when the above shaking is detected, when the detection result by the detection unit satisfies a predetermined condition, the operation control unit that allows the execution of the automatic diagnosis temporary restoration operation is provided.

According to the above configuration, even if the magnitude of the shaking is equal to or greater than the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation, events other than the detected magnitude of the shaking are predetermined. When the above conditions are satisfied, that is, when the degree of damage to the elevator is estimated to be small, the automatic diagnosis temporary restoration operation can be performed. Therefore, the elevator can be temporarily restored, that is, the operation can be restarted quickly. Moreover, since the operation can be restarted without inspection by a professional engineer, the burden on the professional engineer can be reduced.

Further, in the elevator operation control system according to one aspect of the present invention, the detection unit detects the direction of the shaking, and the conditions are determined based on the direction of the shaking with respect to the direction in which the elevator is installed. You may.

According to the above configuration, if the direction of the elevator sway satisfies the condition determined based on the direction in which the elevator is installed and the direction of the sway, the magnitude of the sway determines the execution of the automatic diagnosis temporary restoration operation. Even if the value exceeds the set value set for prohibition, the automatic diagnosis temporary recovery operation can be performed. Therefore, the elevator can be temporarily restored, that is, the operation can be restarted quickly. Moreover, since the operation can be restarted without inspection by a professional engineer, the burden on the professional engineer can be reduced.

As a specific example of the condition, the direction of shaking is a direction in which the rope of the elevator does not swing in the direction of the guide rail on the car side. In a general elevator, various switches are arranged on a guide rail on the car side via a bracket. Here, if the rope does not swing toward the guide rail on the car side, it is unlikely that the rope will come into contact with these switches and fail. That is, if the above conditions are satisfied, it is estimated that the degree of damage to the elevator is small, so that the magnitude of the shaking of the elevator operation control system is greater than or equal to the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation. Even if it is, it can be determined that the automatic diagnosis temporary restoration operation may be performed.

Further, in the elevator operation control system according to one aspect of the present invention, the detection unit detects the position of the car in the hoistway of the elevator when the shaking occurs, and the condition is based on the position of the car. It may be defined.

According to the above configuration, if the position of the car when the shaking occurs satisfies the condition determined based on the position, the magnitude of the shaking is set to prohibit the execution of the automatic diagnosis temporary recovery operation. Even if the value is equal to or higher than the set value, the automatic diagnosis temporary restoration operation can be performed. Therefore, the elevator can be temporarily restored, that is, the operation can be restarted quickly. Moreover, since the operation can be restarted without inspection by a professional engineer, the burden on the professional engineer can be reduced.

As a specific example of the condition, the position of the car when the shaking occurs is within the non-resonant range. The non-resonant range is a range in which the rope is unlikely to resonate even if shaking occurs when the position of the car is within the range. The non-resonant range is predetermined based on the natural period of the building in which the elevator is installed and the specifications of the elevator. When the position of the car is within the non-resonant range, the rope of the elevator is less likely to swing, so that it is unlikely that the rope will be caught by each member in the hoistway or will come into contact with each member and be damaged. That is, if the above conditions are satisfied, it is estimated that the degree of damage to the elevator is small, so that the magnitude of the shaking of the elevator operation control system is greater than or equal to the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation. Even if it is, it can be determined that the automatic diagnosis temporary restoration operation may be performed.

Further, as another example of the above condition, the position of the car when the shaking occurs is the top floor. If the car is on the top floor, the length of the rope on the car side will be shorter, so the switch placed on the guide rail on the car side via the bracket (for example, the position of the car floor and each floor) It is unlikely that the rope will come into contact with the switch used for alignment) and the switch will fail. That is, if the above conditions are satisfied, it is estimated that the degree of damage to the elevator is small, so that the magnitude of the shaking of the elevator operation control system is greater than or equal to the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation. Even if it is, it can be determined that the automatic diagnosis temporary restoration operation may be performed.

Further, in the elevator operation control system according to one aspect of the present invention, the detection unit may specify the car position based on the change history of acceleration acquired from the acceleration sensor attached to the car.

The control panel of the elevator can identify the position of the car based on, for example, the rotation speed and the rotation direction of the motor detected by the encoder. However, the location of the car thus identified can be lost in the event of a power outage due to an earthquake. In this case, even if the car recovers from the power failure, the car position at the time of the shaking cannot be specified.

On the other hand, according to the above configuration, the car position is specified based on the change history of the acceleration acquired from the acceleration sensor. That is, the car position is specified using the information acquired from the outside of the control panel. As a result, even if a power failure occurs due to an earthquake, the position of the car when the shaking occurs can be specified after restoration.

Further, in the elevator operation control system according to one aspect of the present invention, the detection unit detects the moving state of the elevator car at the time of the occurrence of the shaking, and the conditions are determined based on the moving state. May be good.

According to the above configuration, if the moving state of the car when the shaking occurs satisfies the condition determined based on the moving state, the magnitude of the shaking is due to the prohibition of execution of the automatic diagnosis temporary recovery operation. Even if it is equal to or higher than the set value, the automatic diagnosis temporary recovery operation can be performed. Therefore, the elevator can be temporarily restored, that is, the operation can be restarted quickly. Moreover, since the operation can be restarted without inspection by a professional engineer, the burden on the professional engineer can be reduced.

Specific examples of the condition include that the car does not move when the shaking occurs. If the car is not moving, it is unlikely that the car will come off the rail, so-called derailing. That is, if the above conditions are satisfied, it is estimated that the degree of damage to the elevator is small, so that the magnitude of the shaking of the elevator operation control system is greater than or equal to the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation. Even if it is, it can be determined that the automatic diagnosis temporary restoration operation may be performed.

According to one aspect of the present invention, it is possible to quickly restart the operation of the elevator after an earthquake and reduce the burden on a professional engineer.

It is a block diagram which shows an example of the main part structure of the control panel included in the elevator which concerns on embodiment of this invention. It is the schematic which shows an example of the structure of the elevator shown in FIG. It is a figure which shows a specific example of the car movement information stored in the control panel shown in FIG. It is a top view of the elevator shown in FIG. 1, and is a diagram showing a specific example of the swing direction of the elevator. It is a figure which shows a specific example of the diagnostic operation condition stored in the control panel shown in FIG. It is a flowchart which shows an example of the flow of the process executed by the control panel shown in FIG.

Hereinafter, one embodiment of the present invention will be described in detail.

(Overview of Elevator 100)
FIG. 2 is a schematic view showing a part of the configuration of the elevator 100 (elevator operation control system). The schematic configuration of the elevator 100 is not limited to the illustrated example.

The illustrated elevator 100 is an elevator provided with a hoistway 21 and a machine room 22. The position of the machine room 22 is not limited to the upper part of the hoistway 21. Further, the elevator 100 may be configured not to include the machine room 22.

As shown, the car 23 of the elevator 100 is connected to one end of the rope 24. A balance weight 25 is connected to the other end of the rope 24. When the hoisting machine 26 installed in the machine room 22 winds up the rope 24, the car 23 moves up and down in the hoistway 21.

In the machine room 22, a control panel 1 that controls each part of the elevator 100 is installed. The control panel 1 moves the car 23 to the floor designated by the user, stops on the floor, and stops the car in response to control signals acquired from various buttons (for example, landing buttons) provided on the elevator 100. It controls the opening and closing of the doors provided on the platform and the landing, and the display change of the position display provided on the landing.

Further, although not shown, the control panel 1 is configured to be able to communicate with an external device via a predetermined communication network (for example, the Internet).

Further, the control panel 1 controls the operation of the elevator 100 after the occurrence of an earthquake. As shown in the figure, an earthquake detector 2 (sensor) is installed in the machine room 22. The seismic detector 2 operates when the acceleration of shaking due to an earthquake is equal to or higher than a preset value (hereinafter referred to as a "set value"), and outputs an operation signal to the control panel 1. Further, when the seismic detector 2 acquires a predetermined signal from the control panel 1 after outputting the operation signal to the control panel 1, the seismic detector 2 returns to the state before outputting the operation signal. Hereinafter, this process will be referred to as "automatic reset". In the illustrated example, only one seismic detector 2 is described in consideration of the legibility of the drawing, but typically, a plurality of seismic detectors 2 having different set values are installed. In the present embodiment, an example in which three seismic detectors 2 of a P wave detector, a low setting detector, and a high setting detector are installed in the machine room 22 will be described. The P-wave detector detects the P-wave of an earthquake. The low setting detector and the high setting detector are S wave detectors that detect the S wave of an earthquake.

A set value of 2.5 Gal or more and 10 Gal or less is set in the P wave detector. The S-wave detector is typically set to one of three set values, called the [extra low] setting, the [low] setting, and the [high] setting. These three setting values are the smallest value in the [extra low] setting and the largest value in the [high] setting. The low setting detector is the seismic detector 2 with the [low] setting among the above three set values, and the high setting detector is the seismic detector 2 with the [high] setting. The specific values of the [Low] setting and the [High] setting may be determined according to the height of the building in which the elevator 100 is installed from the ground. For example, in a building having a height of 60 m or less, when the seismic detector 2 is installed above the hoistway 21 as shown in the figure, the [low] setting is 200 Gal and the [high] setting is 300 Gal.

In the case of high-rise buildings, specifically, buildings higher than 60 m and 120 m or less, the rope 24 sways at the top of the building due to an earthquake accompanied by surface waves that cannot be detected by the P-wave detector. It can grow. In such a case, in addition to these three seismic detectors 2, an S-wave detector with [extra low] setting may be installed. The specific value of the [extra low] setting is, for example, 40 Gal in the case of a building higher than 60 m and 90 m or less.

Further, instead of the high setting sensor, an S wave sensor with the [diagnosis] setting may be installed. The [diagnosis] setting is a setting value considering only the strength design of the building, as opposed to the [high] setting which is a setting value considering the strength design of the building and the amplitude expansion of the rope 24. Therefore, the specific value of the [Diagnosis] setting is higher than the [High] setting.

Further, the seismic detector 2 may be installed in a place other than the machine room 22. For example, it may be installed at the lower part of the hoistway 21, or it may be installed at a place different from the elevator 100 in the building. In principle, the P-wave detector is installed in the lower part of the hoistway 21. Further, when the low setting sensor and the high setting sensor are installed in the lower part of the hoistway 21, the set value is made smaller than in the case where the low setting sensor and the high setting sensor are installed in the upper part of the hoistway 21. For example, in a building having a height of 60 m or less from the ground, when a low setting sensor and a high setting sensor are installed in the lower part of the hoistway 21, the set values are 80 Gal and 120 Gal, respectively.

Further, when a plurality of elevators are installed in the building, the seismic detector 2 may be installed for each elevator or may be shared.

In this disclosure, there is no intention to limit the cause of the shaking generated in the elevator 100 to an earthquake. The cause of the shaking generated in the elevator 100 may be, for example, a strong wind.

The control panel 1 performs processing according to the type of the seismic detector 2 that outputs the operation signal. Specifically, when the operation signal is acquired only from the P-wave detector, the control panel 1 stops the operation of the elevator 100 for a predetermined time and then restarts it. Further, when the operation signal is acquired from the P-wave detector and the low setting detector, the control panel 1 performs the automatic diagnostic operation if the automatic diagnostic operation for temporary restoration is possible. Further, when the operation signals are acquired from all the seismic detectors 2, the control panel 1 basically does not restart the operation of the elevator 100 until the inspection by a professional engineer is performed. In other words, the automatic diagnosis operation and the temporary recovery operation (hereinafter, these two operations are collectively referred to as the automatic diagnosis temporary restoration operation) that is executed when it is determined that there is no abnormality by the automatic diagnosis operation are performed. The condition for this is that the high setting detector (or the seismic detector 2 with the [diagnosis] setting) does not detect shaking (acceleration) exceeding a predetermined set value. That is, the set value set in the high setting sensor (or the earthquake sensor set in [Diagnosis]) is the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation.

Even if the control panel 1 acquires the operation signals from all the seismic detectors 2, the control panel 1 may exceptionally execute the automatic diagnosis temporary restoration operation. This point will be described later.

Further, as shown in the figure, an acceleration sensor 3A is installed in the car 23 according to the present embodiment. The acceleration sensor 3A detects the acceleration generated in the car 23 at predetermined time intervals (for example, every 0.5 seconds). Further, an acceleration sensor 3B is installed in the vicinity of the seismic detector 2 in the machine room 22. The acceleration sensor 3B is provided with a control panel 1 for specifying the magnitude and direction of the shaking using the acceleration detected by the acceleration sensor 3B when the elevator 100 shakes due to the occurrence of an earthquake or the like. There is. Similar to the acceleration sensor 3A, the acceleration sensor 3B also detects acceleration at predetermined time intervals (for example, every 0.5 seconds). In the following description, when the acceleration sensors 3A and 3B are not distinguished, they may be collectively referred to as the acceleration sensor 3. An existing acceleration sensor 3 can be used.

The acceleration sensor 3A may be installed at a position different from the illustrated example, for example, at the lower outer side or the side surface of the car 23, as long as it can detect the acceleration generated in the car 23. It may be installed inside the 23. Further, it is preferable that the acceleration sensor 3B is installed in the vicinity of the earthquake sensor 2 in order to suppress a deviation from the detection result of the earthquake sensor 2. In other words, when the seismic detector 2 is installed at a position different from the machine room 22, the acceleration sensor 3B is also located at a different position from the machine room 22 (that is, the position where the seismic detector 2 is installed). It is installed in the vicinity of).

(Main part configuration of control panel 1)
FIG. 1 is a block diagram showing an example of a main configuration of the control panel 1. As shown in the figure, the control panel 1 includes a control unit 10, a communication unit 11, and a storage unit 12. The control unit 10 controls each unit of the control panel 1 in an integrated manner. The communication unit 11 connects to an external device of the control panel 1 so as to be able to communicate by wire or wirelessly, and acquires data from the device. The storage unit 12 stores various data used by the control panel 1. The storage unit 12 stores at least the layout information 121, the car movement information 122, and the diagnostic operation condition 123.

The layout information 121 is information regarding the layout of the elevator 100, including the arrangement and dimensions of each member of the elevator 100. Specifically, the layout information 121 includes at least the height of each floor of the elevator 100 from the ground and information indicating which direction the elevator 100 is facing (hereinafter, referred to as "elevator direction information"). including. The elevator orientation information may be, for example, information indicating the orientation of the surface on which the door of the elevator 100 is installed.

The car movement information 122 is information indicating a change over time in the position of the car 23. FIG. 3 is a diagram showing a specific example of the car movement information 122. As shown in the figure, the car movement information 122 may indicate the position of the car 23 on the floor or the height from the ground. The details of the car movement information 122 will be described later.

The diagnostic operation condition 123 is a condition relating to whether or not the automatic diagnostic temporary restoration operation can be executed for each event other than the magnitude of the shaking, which may affect the degree of damage to the elevator 100 due to the occurrence of the shaking. Typical of the event are (1) the elevator 100 shook (or did not sway) in a predetermined direction at the time of the earthquake, (2) the car 23 was (or was not) in the predetermined position at the time of the earthquake, (3). ) The car 23 was moving (or stopped) at the time of the earthquake. By considering these events in addition to the magnitude of the shaking, it is possible to more accurately determine whether or not the automatic diagnosis temporary restoration operation can be executed. The details of the diagnostic operation condition 123 will be described later.

As shown in FIG. 1, the control unit 10 includes a detection unit 101, a detection result determination unit 102, and an operation control unit 103.

The detection unit 101 detects an event other than the magnitude of the shaking that may affect the degree of damage to the elevator 100 due to the occurrence of the shaking. Specifically, when the detection unit 101 acquires an operation signal from the earthquake detector 2 via the communication unit 11, the detection unit 101 outputs the operation signal to the operation control unit 103 and operates from any of the earthquake detectors 2. Identify if it is a signal. When the operation signals are from all the seismic detectors 2, the detection unit 101 detects an event other than the magnitude of the above-mentioned shaking. Further, when the detection unit 101 acquires the acceleration from the acceleration sensor 3B via the communication unit 11, it determines whether or not the acceleration exceeds a predetermined threshold value. That is, the detection unit 101 determines whether or not the elevator 100 is shaking due to an earthquake or the like.

As shown in FIG. 1, the detection unit 101 includes a car position detection unit 111, a sway direction detection unit 112, and a movement presence / absence detection unit 113.

The car position detection unit 111 detects the position of the car 23 in the hoistway 21 (hereinafter, referred to as “earthquake car position”) when the shaking occurs as an event other than the magnitude of the shaking. In the present embodiment, the car position detection unit 111 detects the car position based on the change history of the acceleration acquired from the acceleration sensor 3A.

Specifically, when the car position detection unit 111 acquires the acceleration from the acceleration sensor 3A via the communication unit 11, the car position detection unit 111 integrates the acceleration in the second order using the acceleration acquisition interval (for example, 0.5 seconds). As a result, the amount of change in the position of the car 23 is calculated. The car position detection unit 111 determines the position of the car 23 in the hoistway 21 based on the calculated change amount of the position and the layout information 121 and the car movement information 122 stored in the storage unit 12. Identify. Specifically, the car position detection unit 111 reads out the position of the car 23 indicated based on the floor, which is specified from the acceleration acquired last time, from the car movement information 122. The car position detection unit 111 converts the position of the read car 23 into a height above the ground by referring to the layout information 121. The car position detection unit 111 specifies the height of the position based on the acceleration acquired this time from the ground by adding the calculated change amount to the height from the ground. The car position detection unit 111 refers to the height from the ground of each floor included in the layout information 121, and sets the height of the specified car 23 from the ground to the position of the car 23 indicated based on the floor. By converting, the position of the car 23 is calculated based on the acceleration acquired this time. Finally, the car position detection unit 111 adds the calculated position of the car 23 to the car movement information 122 (updates the car movement information 122). The car position detection unit 111 performs the above processing every time the acceleration is acquired from the acceleration sensor 3.

When the car movement information 122 indicates the position of the car 23 by the height from the ground, the car position detection unit 111 reads the car from the car movement information 122 in order to update the car movement information 122. It is only necessary to calculate the position of the car 23 based on the acceleration acquired this time by adding the calculated change amount to the position of 23, and add the position of the car 23 to the car movement information 122.

When the car position detection unit 111 acquires an operation signal from the seismic detector 2 via the communication unit 11, the car position detection unit 111 identifies the position of the nearest car 23 with reference to the car movement information 122. The car position detection unit 111 identifies the position of the car 23 as the car position at the time of an earthquake, that is, the position of the car 23 in the hoistway 21 when a tremor occurs. Then, the car position detection unit 111 outputs the specified car position at the time of an earthquake as a detection result to the detection result determination unit 102.

The shaking direction detection unit 112 detects the direction of shaking generated in the elevator 100 (hereinafter, referred to as “elevator shaking direction”). In the present embodiment, the shaking direction detection unit 112 detects the shaking direction of the elevator by using the acceleration detected by the acceleration sensor 3B. Specifically, when the detection unit 101 determines that the acquired acceleration exceeds a predetermined threshold value, the shaking direction detection unit 112 specifies the direction of the acceleration. Typically, when the elevator 100 shakes, the detection unit 101 acquires a plurality of accelerations exceeding the threshold value. In this case, the shaking direction detection unit 112 specifies the direction for each of the accelerations.

Subsequently, the shaking direction detection unit 112 specifies the elevator shaking direction by using the specified acceleration direction and the elevator direction information included in the layout information 121. The shaking direction detection unit 112 specifies, for example, the angle of the acceleration direction with respect to the reference axis, which is determined based on the elevator direction information, as the elevator shaking direction. FIG. 4 is a top view of the elevator 100, and is a diagram showing a specific example of the elevator shaking direction. In the case of this example, the reference shaft 91 is an axis parallel to the landing door 27 and the car door 28 of the elevator 100. The swing direction detection unit 112 identifies the angle 93 formed by the acquired acceleration direction 92 and the reference axis 91. Then, the specified angle, that is, the elevator shaking direction is output to the detection result determination unit 102 as a detection result.

The movement presence / absence detection unit 113 detects the moving state of the car 23 at the time of the occurrence of shaking, that is, whether or not the car 23 has moved at the time of the occurrence of the earthquake. In the present embodiment, the movement presence / absence detection unit 113 refers to the car movement information 122 to specify whether or not the car 23 has moved. Specifically, when the movement presence / absence detection unit 113 acquires an operation signal from the seismic detector 2 via the communication unit 11, the movement presence / absence detection unit 113 refers to the car movement information 122 to determine whether or not the position of the latest car 23 has changed. Identify. When the position of the car 23 has changed, the movement presence / absence detection unit 113 determines that the car 23 was moving at the time of the earthquake. On the other hand, when the position of the car 23 has not changed, the movement presence / absence detection unit 113 determines that the car 23 has not moved at the time of the earthquake. Then, the movement presence / absence detection unit 113 outputs the determination result as the detection result to the detection result determination unit 102.

The detection result determination unit 102 determines whether or not the acquired detection result satisfies a predetermined condition. When the detection result determination unit 102 acquires the detection result from the detection unit 101, the detection result determination unit 102 reads out the diagnostic operation condition 123 from the storage unit 12. FIG. 5 is a diagram showing a specific example of the diagnostic operation condition 123.

The diagnostic operation condition 123 in the illustrated example is the detection result acquired for the "position of the car 23" at the time of the earthquake, the "direction of shaking" of the elevator 100 due to the earthquake, and the "movement of the car 23" at the time of the earthquake. Includes conditions that must be met.

The detection result determination unit 102 refers to the diagnostic operation condition 123 and determines whether or not the position of the car at the time of an earthquake acquired as a detection result is within the “non-resonant range”. The non-resonant range is a range in which the rope is unlikely to resonate even if shaking occurs when the position of the car is within the range. Typically, the non-resonant range is a range that includes the positions of the hoistways 21 corresponding to the plurality of floors and the positions of the hoistways 21 corresponding between the floors. For example, when the non-resonant range is from the 3rd floor to the 5th floor, the non-resonant range includes the 3rd floor, the 3rd floor and the 4th floor, the 4th floor, the 4th floor and the 5th floor, and the 5th floor, respectively. The position of the corresponding hoistway 21 is included. The non-resonant range is predetermined based on the natural period of the building in which the elevator 100 is installed and the specifications of the elevator 100. The specific range of the non-resonant range may be included in the diagnostic operation condition 123 or may be included in the layout information 121. In the latter case, the detection result determination unit 102 may specify the non-resonant range with reference to the layout information 121.

Further, the detection result determination unit 102 refers to the diagnostic operation condition 123, and the elevator sway direction acquired as the detection result does not sway in the direction of the guide rail (not shown) on the car 23 side of the elevator 100. It is determined whether or not it is "direction". In the diagnostic operation condition 123, when the elevator swing direction is indicated by an angle as in the present embodiment, the elevator swing direction is the direction of the guide rail on the car 23 side of the rope (hereinafter, "car side guide rail direction"). An angle range (for example, "0 ° or more and less than 60 °, 120 ° or more and 180 ° or less", etc.) indicating that the direction does not swing may be stored.

Further, the detection result determination unit 102 refers to the diagnostic operation condition 123 and determines whether or not the determination result of whether or not the car 23 has been moved, which is acquired as the detection result, is “not moving”. The detection result determination unit 102 outputs the determination results of these three determinations to the operation control unit 103.

The operation control unit 103 controls the operation of the elevator. Specifically, the operation control unit 103 transmits a drive signal to the elevator drive unit 4 of the elevator 100 to drive the elevator drive unit 4. The elevator drive unit 4 is a general term for each unit of the elevator 100 that is driven by the control of the control panel 1. Specific examples of the elevator drive unit 4 include, but are not limited to, a hoisting machine 26, a landing door 27, a car door 28, and the like. When the operation control unit 103 acquires the operation signal from the earthquake detector 2, the operation of the elevator 100 is stopped.

The operation control unit 103 includes a diagnostic operation control unit 131. The diagnostic operation control unit 131 controls the automatic diagnostic operation for temporary restoration. When the diagnostic operation control unit 131 acquires the operation signals from all the seismic detectors 2 from the detection unit 101, the diagnosis operation control unit 131 is in a state of waiting for the determination result from the detection result determination unit 102. The diagnostic operation control unit 131 determines whether or not the determination result indicates that all the conditions included in the diagnostic operation condition 123 are satisfied. As a result, the diagnostic operation control unit 131 determines whether or not the automatic diagnostic temporary restoration operation can be tolerated.

If the car position during an earthquake is within the non-resonant range, it is highly likely that the rope 24 has not swayed significantly. In this case, it is unlikely that the rope 24 is caught on each member in the hoistway 21, and it is unlikely that each member in the hoistway 21 is damaged by the contact of the rope 24. That is, when the car position during an earthquake is within the non-resonant range, it is unlikely that a problem will occur even if the automatic diagnosis temporary restoration operation is executed.

Further, when the elevator swing direction is such that the rope 24 does not swing toward the car side guide rail of the elevator 100, there is a possibility that the rope 24 is in contact with various switches (not shown) provided in the hoistway 21. Is low. This is because in a general elevator, various switches are arranged on the guide rail on the car side via brackets (not shown). An example of various switches is a position detection switch. The position detection switch is a switch used to align the floor of the car 23 with each floor. If the switch is damaged, there is a risk that the position of the floor of the car 23 and each floor will shift when the car 23 is stopped on each floor, but the elevator swing direction is the direction of the rope 24 on the car side guide rail of the elevator 100. If the direction does not sway, it is unlikely that the position detection switch is damaged due to the contact of the rope 24, so that it is unlikely that a problem will occur even if the automatic diagnosis temporary restoration operation is executed.

Further, when the car 23 is not moving at the time of the earthquake, it is unlikely that the car 23 is derailed, so that it is unlikely that a problem will occur even if the automatic diagnosis temporary restoration operation is executed.

If the diagnostic operation control unit 131 indicates that the acquired determination result satisfies all the conditions included in the diagnostic operation condition 123, there is a problem even if the automatic diagnostic temporary recovery operation is executed as described above. Since it is unlikely to occur, the execution of automatic diagnostic temporary recovery operation is permitted. Subsequently, the diagnostic operation control unit 131 determines whether or not the condition for permitting the automatic diagnostic operation (hereinafter, simply referred to as "other conditions") other than the diagnostic operation condition 123 is satisfied. Other conditions include, for example, that the elevator safety device is not operating, that it is stopped on one of the floors, and the like, but the present invention is not limited to this example. The safety device may include a safety device having a low relevance to the earthquake (for example, a device that stops the car 23 when the car door 28 is opened while the car 23 is moving).

When the diagnostic operation control unit 131 determines that the other conditions are satisfied, the diagnostic operation control unit 131 controls the elevator drive unit 4 to start the automatic diagnostic operation. That is, the diagnostic operation control unit 131 executes the automatic diagnostic operation when the detection result satisfies the condition included in the diagnostic operation condition 123 and other conditions even when the high setting sensor is operated. ..

On the other hand, when the determination result from the detection result determination unit 102 indicates that any of the conditions included in the diagnostic operation condition 123 is not satisfied, the diagnostic operation control unit 131 does not execute the automatic diagnostic operation. Further, even if the determination result satisfies all the conditions included in the diagnostic operation condition 123, if it is determined that any of the other conditions is not satisfied, the diagnostic operation control unit 131 performs the automatic diagnostic operation. Do not execute.

When the diagnostic operation control unit 131 acquires the operation signal from the P-wave sensor and the low setting sensor and does not acquire the operation signal from the high setting sensor, the determination result from the detection result determination unit 102 It is determined whether or not the above-mentioned other conditions are satisfied without waiting for. Then, when the diagnostic operation control unit 131 determines that the other conditions are satisfied, the diagnostic operation control unit 131 controls the elevator drive unit 4 to start the automatic diagnostic operation. On the other hand, if it is determined that the other conditions are not satisfied, the diagnostic operation control unit 131 does not execute the automatic diagnostic operation.

Further, when the operation signal is acquired only from the P-wave detector, the operation control unit 103 stops the elevator drive unit 4 for a predetermined time and then restarts the normal operation.

(Flow of processing executed by control panel 1)
FIG. 6 is a flowchart showing an example of the flow of processing executed by the control panel 1. Here, in order to distinguish between the automatic diagnosis operation and the temporary restoration operation, the normal operation of the elevator 100 is referred to as "normal operation".

The operation control unit 103 starts normal operation of the elevator 100 (S1). The operation control unit 103 is waiting for an inspection signal (S2). The inspection signal is a signal transmitted to the operation control unit 103 via the communication unit 11 when the inspection switch (not shown) is turned from OFF to ON. The inspection switch is located in an operation panel box (not shown) provided in the car 23.

When the operation control unit 103 does not receive the inspection signal (NO in S2) and the detection unit 101 acquires the operation signal from the P-wave detector (YES in S3), the detection unit 101 receives the operation signal. Output to the operation control unit 103. When the operation control unit 103 acquires the operation signal, the operation control unit 103 stops the operation of the elevator 100 (S4).

When the detection unit 101 further acquires an operation signal from the low sensor (YES in S5), the detection unit 101 waits until a predetermined time elapses (S6). The predetermined time is a time during which the shaking of the building due to the earthquake continues, and is typically about 5 to 10 minutes, although it depends on the height of the building. That is, when the detection unit 101 acquires the operation signal from the low sensor, it waits until the shaking subsides. When the predetermined time elapses (YES in S6), the detection unit 101 determines whether or not the operation signal from the high sensor has been acquired (S7). When the operation signal from the high sensor is acquired (YES in S7), the detection unit 101 detects an event other than the magnitude of the shaking (S8). In the present embodiment, as described above, the detection unit 101 identifies the car position during an earthquake, the elevator shaking direction, and the presence or absence of movement of the car 23 when an earthquake occurs, and uses these as detection results to the detection result determination unit 102. Output.

When the detection result determination unit 102 acquires the detection result, it determines whether or not the detection result satisfies the diagnostic operation condition 123 (S9), and outputs the determination result to the diagnostic operation control unit 131.

When the diagnostic operation control unit 131 acquires the determination result that the detection result satisfies the diagnostic operation condition 123 (YES in S9), the diagnostic operation control unit 131 determines whether or not other conditions regarding the propriety of the automatic diagnostic operation are satisfied. (S10). When it is determined that the condition is satisfied (YES in S10), the diagnostic operation control unit 131 causes the elevator 100 to start the automatic diagnostic operation (S11).

The diagnostic operation control unit 131 detects an abnormality in the elevator 100 by automatic diagnostic operation (S12). When the automatic diagnosis operation is completed (YES in S13) without detecting an abnormality (YES in S12), the elevator 100 is temporarily restored and the operation is restarted (S14). The operation control unit 103 automatically resets the P-wave detector and the S-wave detector by transmitting a signal to the P-wave detector and the S-wave detector (S15). Then, the process shown in FIG. 6 returns to step S2.

A professional engineer opens the operation panel box and switches the inspection switch from OFF to ON in order to perform an inspection for the elevator 100 to be fully restored. Also, like the inspection switch, the operation switch in the operation panel box is switched from automatic operation to manual operation. As a result, an inspection signal is transmitted to the control panel 1. When the operation control unit 103 acquires the inspection signal (YES in S2), the operation control unit 103 stops the operation of the elevator 100 (S21).

If no abnormality is found in the inspection by the professional engineer (YES in S22), the professional engineer switches the inspection switch from ON to OFF and switches the operation switch from manual operation to automatic operation. As a result, a signal for starting normal operation is transmitted to the control panel 1. When the operation control unit 103 acquires the signal, the operation control unit 103 restarts the normal operation of the elevator 100 (S23). In this case, since all the seismic detectors 2 have already been reset, the seismic detector 2 is not automatically reset even if the signal is transmitted in step S15. Alternatively, if the control panel 1 holds information indicating whether or not the earthquake detector 2 has been automatically reset, and the information indicates that the automatic reset has been performed, the operation control unit 103 causes an earthquake. It may be configured not to transmit a signal to the sensor 2. In this case, step S15 is omitted.

In step S5, when the detection unit 101 has not acquired the operation signal from the low sensor (NO in S5), the detection unit 101 waits until a predetermined time elapses (step S16). The predetermined time is a time lag from the detection of the P wave to the detection of the S wave, and is typically about 45 to 60 seconds. That is, when the detection unit 101 acquires the operation signal from the P wave detector, it waits until it can be specified that the S wave does not come. If the operation signal from the low sensor is not acquired by the elapse of the predetermined time (YES in S16), the detection unit 101 notifies the operation control unit 103 that the predetermined time has elapsed. Upon receiving the notification from the detection unit 101, the operation control unit 103 determines whether or not the temporary restoration operation is in progress (S17). When the temporary restoration operation is in progress (YES in S17), the operation control unit 103 restarts the temporary restoration operation (S18). On the other hand, when the temporary restoration operation is not in progress (NO in S17), that is, in the normal operation, the operation control unit 103 restarts the normal operation (S20). Then, the operation control unit 103 resets the P-wave detector by transmitting a signal to the P-wave detector (S19). Then, the process shown in FIG. 6 returns to step S2.

In step S9, when the diagnostic operation control unit 131 acquires a determination result that the detection result does not satisfy the diagnostic operation condition 123 (NO in S9), the process of FIG. 6 proceeds to step S22. That is, the elevator 100 is in a state of waiting for an inspection by a professional engineer without the diagnostic operation control unit 131 executing the diagnostic operation. This is also the case when the diagnostic operation control unit 131 determines in step S10 that the other conditions regarding the possibility of automatic diagnostic operation are not satisfied (NO in S10).

When an abnormality of the elevator 100 is detected in the automatic diagnosis operation in step S12 (NO in S12), the diagnostic operation control unit 131 ends the automatic diagnosis operation of the elevator 100 (S24) and stops the operation of the elevator 100. (S25). Then, the process shown in FIG. 6 proceeds to step S22.

As described above, the control panel 1 according to the present embodiment shakes due to the detection unit 101 even when the operation signal from the high setting sensor, which basically cannot perform the automatic diagnosis operation, is acquired. If the detection result of an event other than the magnitude of is satisfying the diagnostic operation conditions, the execution of automatic diagnosis is exceptionally permitted. As a result, the elevator in which no abnormality has occurred can be quickly temporarily restored, so that the operation of the elevator can be restarted quickly. In addition, since an elevator in which no abnormality has occurred can be restored (temporarily restored) without inspection by a specialized engineer, the expert engineer can lower the priority of inspection of such an elevator. Therefore, the number of elevators that need to be inspected immediately is reduced, and the burden on professional engineers can be reduced.

[Modification 1]
In order to control the movement of the car 23, the control panel 1 needs to recognize the state (position, presence / absence of movement, etc.) of the car 23. Specifically, the control panel 1 can specify the movement amount and the movement direction of the car 23 from the rotation speed and the rotation direction of the motor (not shown) detected by the encoder (not shown). Further, the control panel 1 can specify the position of the car 23 and the presence / absence of movement based on the information.

The car position detection unit 111 and the movement presence / absence detection unit 113 specify the position of the car 23 and the presence / absence of movement at the time of an earthquake by using the position of the car 23 specified by the control panel 1 and the presence / absence of movement as described above. You may. As a result, the position of the car 23 and the presence or absence of movement at the time of an earthquake can be specified without using the acceleration sensor 3.

On the other hand, in the case of the modified example, if the information indicating the position of the car 23 specified by the control panel 1 and the presence / absence of movement is lost due to the power failure due to the earthquake, the position of the car 23 and the presence / absence of movement at the time of the earthquake are determined. Cannot be identified. On the other hand, as in the above-described embodiment, if the car movement information 122, which is the change with time of the position of the car 23, is generated based on the acceleration acquired from the acceleration sensor 3, and stored in the storage unit 12, Even if a power failure occurs, the control panel 1 can specify the position of the car 23 and the presence or absence of movement at the time of the earthquake.

[Modification 2]
Instead of the acceleration sensor 3, the elevator 100 is installed on one side surface of the hoistway 21 at a position where the magnetic tape stretched along the elevating direction of the car 23 and the magnetic tape of the car 23 can be read. It may be provided with a magnetic sensor. Information that can identify the position of the car 23 (for example, information that can identify the height from the ground) is recorded on the magnetic tape. Further, the magnetic sensor is a sensor that detects the magnitude and direction of the magnetic field, and an existing one can be used.

The magnetic sensor reads the magnetic tape and acquires the information recorded on the magnetic tape. The magnetic sensor adds time information indicating the acquired time to the acquired information (hereinafter referred to as "acquired information"). Since the magnetic sensor is installed in the car 23, the acquired information to which the time information is added becomes position information indicating at what time and in what position the car 23 was. When the magnetic tape records the information for generating the position information as a bar code or a two-dimensional code, a camera that reads the bar code or the two-dimensional code is installed in the car 23 instead of the magnetic sensor. May be good.

The car position detection unit 111 according to this modification acquires position information from the magnetic sensor via the communication unit 11. The car position detection unit 111 identifies position information including time information that coincides with (or is within a time range set based on the time) the time when the operation signal is acquired from the high setting sensor. Then, the car position detection unit 111 outputs the position of the car 23 indicated by the specified position information to the detection result determination unit 102 as the position of the car 23 when an earthquake occurs.

In this way, by using the magnetic tape and the magnetic sensor, the position of the car 23 can be specified without requiring the calculation of the position on the control panel 1, which is executed when the acceleration sensor 3 is used.

[Other variants]
Further, the car movement information 122 may be generated and updated by a device different from the control panel 1. For example, the acceleration sensor 3A transmits acceleration to an information processing device or a server of a specialist engineer via a predetermined communication network, and the information processing device or the server generates and updates the car movement information 122. May be good. In the case of this example, the control panel 1 may acquire the car movement information 122 via the communication network and specify the position of the car 23 and the presence / absence of movement when an earthquake occurs.

Further, the shaking direction detection unit 112 may specify the shaking direction of the elevator 100 from the shaking direction of the earthquake acquired from an external device outside the elevator 100 and the elevator direction information included in the layout information 121. Good. The external device may be, for example, a server managed by the Japan Meteorological Agency, but is not limited to this example.

For example, the shaking direction detection unit 112 specifies the angle of the shaking direction of the earthquake with respect to the reference axis, which is determined based on the elevator direction information, as the shaking direction of the elevator 100. Specifically, by replacing the acceleration direction 92 shown in FIG. 4 with the shaking direction of the earthquake, the shaking direction of the elevator 100 can be specified.

Further, the detection unit 101, the detection result determination unit 102, and the storage unit 12 of the present embodiment may be provided at least in an external device capable of communicating with the control panel. As a result, by connecting the external device to the existing control panel in a communicable manner, it is possible to realize the same function as the control panel 1 described above without replacing the control panel. The external device may acquire the operation signal directly from the seismic detector 2 or may acquire it via the control panel 1. Further, this external device may be installed inside the elevator 100 (for example, inside the machine room 22), or may be installed outside the elevator 100.

Further, the diagnostic operation condition 123 is not limited to the one including the three conditions shown in FIG. For example, any one or two of the three conditions may be satisfied. In this case, the detection unit 101 may include only the member corresponding to the condition included in the diagnostic operation condition 123. For example, when the diagnostic operation condition 123 has only the conditions relating to the car position and the movement of the car, the detection unit 101 may not include the sway direction detection unit 112.

Further, the contents of the conditions included in the diagnostic operation condition 123 are not limited to those shown in FIG. For example, the condition regarding the car position at the time of an earthquake may be "the car position at the time of an earthquake is the top floor". When the car position is on the top floor during an earthquake, the length of the rope 24 on the car 23 side is shortened, so even if the rope 24 shakes, each member arranged on the guide rail on the car 23 side via the bracket. It is less likely to get caught or touched (eg, a switch).

Further, in addition to the P-wave detector and the S-wave detector, a long object runout detector may be installed. For example, in a building exceeding 120 m, when the height of the top of the hoistway 21 exceeds 60 m, the acceleration is such that the P-wave detector and the S-wave detector do not operate (for example, acceleration caused by long-period ground motion). ) But the building shakes a lot. As a result, even though the P-wave detector and the S-wave detector do not operate, a long object such as a rope 24 may come into contact with each member in the hoistway 21 and damage each member. In such a case, it is preferable to install a straightedge runout detector.

The long object runout detector is typically set to one of two acceleration settings, referred to as the [low runout] setting and the [high runout] setting. The [Low runout] setting is set to a value lower than the [High runout] setting. The control panel 1 performs processing according to the type of the long object runout detector that outputs the operation signal. When the operation signal is acquired only from the long object runout sensor set to [Low runout], the control panel 1 stops the operation of the elevator 100 for a predetermined time and then restarts it. On the other hand, when the operation signal is acquired from the long object runout detector set to [Runout height], the control panel 1 does not restart the operation of the elevator 100 until the inspection by a professional engineer is performed. If an automatic diagnostic operation for temporary restoration is possible, the automatic diagnostic operation may be performed.

Here, in the former case, the control panel 1 may perform the same processing as the case where the operation signals are acquired from all the seismic detectors 2 described above. That is, when the operation signal is acquired from the long object runout detector set to [Runout height], the control panel 1 basically does not restart the operation of the elevator 100 until the inspection by a professional engineer is performed. On the other hand, when the detection result by the detection unit 101 satisfies the diagnostic operation condition 123, the diagnostic operation control unit 131 may allow the automatic diagnosis temporary restoration operation.

[Example of realization by software]
The control block (particularly the control unit 10) of the control panel 1 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software.

In the latter case, the control panel 1 includes a computer that executes the instructions of a program that is software that realizes each function. The computer includes, for example, one or more processors and a computer-readable recording medium that stores the program. Then, in the computer, the processor reads the program from the recording medium and executes it, thereby achieving the object of the present invention. As the processor, for example, a CPU (Central Processing Unit) can be used. As the recording medium, in addition to a "non-temporary tangible medium" such as a ROM (Read Only Memory), a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, a RAM (Random Access Memory) for expanding the above program may be further provided. Further, the program may be supplied to the computer via an arbitrary transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. In addition, one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the above program is embodied by electronic transmission.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

2 Earthquake detector (sensor)
3 Accelerometer 21 Hoistway 23 Car 100 Elevator (elevator operation control system)
101 Detector 123 Diagnostic operation conditions (conditions)
131 Diagnostic operation control unit (operation control unit)

Claims (4)

With respect to the elevator in which the shaking has occurred, a detector that detects that the magnitude of the shaking is equal to or greater than the set value set for prohibiting the execution of the automatic diagnosis temporary restoration operation.
A detection unit that detects an event other than the magnitude of the shaking, which may affect the degree of damage to the elevator due to the occurrence of the shaking.
Even when the detector detects shaking of the set value or more, when the detection result by the detection unit satisfies a predetermined condition, the operation control unit that allows the execution of the automatic diagnosis temporary restoration operation is provided. With,
The detection unit detects the direction of acceleration acquired from the acceleration sensor attached to the car of the elevator and the position of the car in the hoistway of the elevator when the shaking occurs.
The elevator operation is characterized in that the condition is determined based on the angle of the direction of the acceleration with respect to the reference axis determined based on the information indicating which direction the elevator is facing , and the position of the car. Control system. The elevator operation control system according to claim 1 , wherein the detection unit identifies the position of the car based on a history of changes in acceleration acquired from an acceleration sensor attached to the car. The detection unit detects the moving state of the car of the elevator at the time of the occurrence of the shaking.
The elevator operation control system according to claim 1 or 2 , wherein the conditions are determined based on the moving state. For elevators that have swayed, a detector that detects that the magnitude of the sway is greater than or equal to the set value set for prohibiting execution of automatic diagnostic temporary restoration operation.
A detection unit that detects an event other than the magnitude of the shaking, which may affect the degree of damage to the elevator due to the occurrence of the shaking.
Even when the detector detects shaking of the set value or more, when the detection result by the detection unit satisfies a predetermined condition, the operation control unit that allows the execution of the automatic diagnosis temporary recovery operation is provided. With,
The detection unit detects the direction of acceleration acquired from the acceleration sensor attached to the car of the elevator and the moving state of the car of the elevator when the shaking occurs.
The elevator operation control is characterized in that the condition is determined based on the angle of the direction of the acceleration with respect to the reference axis determined based on the information indicating which direction the elevator is facing, and the moving state. system.

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