JP2018167920A - Elevator blackout time landing driving device - Google Patents

Abstract

To provide an elevator blackout time landing driving device that is capable of shortening rescue time according to a battery residual quantity.SOLUTION: The elevator blackout time landing driving device that causes a car 1 to travel to a nearest floor by using a battery as a power source during blackout is provided with: moving distance calculation means 15 for calculating a distance from the stop position of the car to the nearest floor, and calculating the movable distance of the car on the basis of a battery residual quantity; and driving control means 12 for determining whether traveling of the car to the nearest floor can be executed through comparison of the distance to the nearest floor with the movable distance.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to an elevator power down landing operation device that causes an elevator car to travel to the nearest floor in the event of a power failure.

  The elevator is provided with a power failure landing operation device that automatically switches to the nearest floor without switching the elevator power between the floors when the power failure occurs and without stopping the car between the floors.

  In order to ensure the reliability of the landing operation device at the time of a power failure, the state of the battery is confirmed, and the technologies described in Patent Documents 1 to 3 are known as conventional technologies related to this.

  In the technique described in Patent Document 1, the elevator is intentionally brought into a power failure state, and the battery is replaced based on the difference in battery voltage before and after the automatic landing operation at the time of power failure and the moving distance at the time of automatic landing operation at the time of power failure. Whether or not is necessary is determined.

  In the technique described in Patent Document 2, a battery deterioration state is diagnosed by discharging a constant current for a predetermined time in an elevator stop state.

  In the technique described in Patent Document 3, the contents of automatic landing operation (brake opening, door opening / closing, nearest floor landing operation) are limited according to the remaining battery level.

JP 2013-139324 A JP-A-9-52672 JP 2008-50149 A

  In the prior art, there is a problem that the remaining amount of battery is consumed during the automatic landing operation at the time of power failure, and the time required for rescue of passengers in the car increases.

  Therefore, the present invention provides an elevator power outage landing operation device that can reduce the rescue time according to the remaining battery level.

  In order to solve the above problems, an elevator power outage landing apparatus according to the present invention uses a battery as a power source in the event of a power outage to run the car to the nearest floor, and from the stop position of the car to the nearest floor The distance to the nearest floor and the distance to the nearest floor based on a comparison of the distance to the nearest floor and the distance that can be moved. Operation control means for determining execution of traveling to the nearest floor of the car.

According to the present invention, since the rescue operation can be executed according to the remaining battery level, the rescue time can be reduced. Problems, configurations, and effects other than those described above will be clarified by the description of the following embodiments.

The structure of the elevator apparatus which is one Embodiment is shown. It is a flowchart which shows the processing operation of the elevator control apparatus at the time of a power failure. 3 is a flowchart showing a processing operation between a branch A and its return B and C in the processing operation in FIG. 2.

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

  FIG. 1 shows a configuration of an elevator apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, the elevator apparatus includes a car 1, a counterweight 2 for reducing the load of raising and lowering the car 1, a main rope 3 that connects the car 1 and the counterweight 2, and a car 1. A hoisting machine 4 for ascending and descending, a curling vehicle 5 for separating the car 1 and the counterweight 2 so as not to interfere with each other, and an elevator control device 6 for controlling the operation of the car 1 are provided.

  When the main rope 3 is wound around the sheave and the curling wheel 5 of the hoisting machine 4, the car 1 and the counterweight 2 are suspended in the hoistway. When the main rope 3 is driven by the sheave being rotated by the electric motor in the hoisting machine 4, the car 1 and the counterweight 2 move in directions opposite to each other in the hoistway. Here, the speed of the electric motor of the hoisting machine 4 is controlled based on the rotational speed of the hoisting machine 4 measured by the rotary encoder 10 attached to the hoisting machine 4.

  A car call button 7 for transmitting a call registration signal for registering the destination floor to the elevator controller 6 when a button corresponding to the floor is pressed is provided in the car room of the car 1.

  Below the floor of the car 1, load detecting means 8 (for example, a load sensor) for detecting a load in the car room of the car 1 is provided.

  Car position detection means 9 for detecting the position of the car 1 by detecting the positional relationship between a car position detection plate (not shown) mounted in the hoistway and the car 1 is provided at the upper part of the car 1. Provided.

  In the present embodiment, a battery for supplying power for landing operation at the time of power outage of a building is provided, and a battery device 11 for switching the power supply of the elevator apparatus from a commercial power source to a battery at the time of power outage is provided. In addition, as a battery, secondary batteries, such as a lithium ion battery and a lead acid battery, are applicable.

  The elevator control device 6 includes an operation control unit 12, a power failure detection unit 13, a battery diagnosis unit 14, a movement distance calculation unit 15, and an external notification unit 16. In the present embodiment, an arithmetic processing unit such as a microcomputer functions as these means by executing a predetermined program. Moreover, the elevator control apparatus 6 functions as a landing operation apparatus at the time of a power failure by these means.

  The operation control means 12 controls the stop position, arrival floor, and traveling speed of the car 1.

  The power failure detection means 13 detects a power failure in the building.

  The battery diagnosis unit 14 discharges a constant current for a predetermined time in the unmanned state of the car (for example, at night when the operation frequency is low) in order to diagnose the deterioration state of the battery in the battery device 11. The deterioration state is diagnosed and the diagnosis result is stored. The battery diagnosis unit 14 updates the diagnosis result stored for each diagnosis, or stores the history of the diagnosis result including the latest diagnosis result. Note that a known diagnosis technique can be applied as the diagnosis unit ( For example, see Patent Document 3).

  The travel distance calculation means 15 is based on the required torque value when the car 1 is operated at a low speed according to the load in the car 1 detected by the load detection means 8 and the diagnosis result by the battery diagnosis means 14. The travel distance of the car 1 is calculated.

  The external notification means 16 notifies a control center (not shown) according to a signal from the operation control means 12.

  Next, the operation of this embodiment will be described with reference to FIGS.

  FIG. 2 is a flowchart showing the main processing operation of the elevator control device 6 as an automatic landing operation device during a power failure during a power failure. The processing operation between the branch A and its return B and C in FIG. 2 will be described later with reference to FIG.

  In step S001 of FIG. 2, it is detected by the power failure detection means 13 whether a power failure has occurred in the building. If no power failure has occurred (N in step S001), the processing operation ends. When the occurrence of a power failure is detected (Y in step S001), the battery device 11 is operated to switch the power supply of the elevator apparatus from the commercial power supply to the battery, and then step S002 is executed.

  In step S002, the operation control means 12 determines whether the stop position of the car 1 is within the door zone, that is, within the automatic door opening range. Here, the automatic door opening range is a range in which a landing door (not shown) opens and closes in conjunction with the opening of the car door of the car 1, and passengers in the car 1 can get on and off. The determination is made based on the detection signal from the detection means 9.

  In step S002, when it is within the automatic door opening range (Y of step S002), the process proceeds to step S003, and when it is outside the automatic door opening range (N of step S002), the process proceeds to step S007.

  In step S003, the car control unit 12 opens the car door of the car 1 for a certain period of time, and puts the car 1 in a standby state until the passenger gets out of the car 1. Once step S003 is executed, next, step S004 is executed.

  In step S004, the operation control means 12 closes the car door of the car 1 and puts the car 1 into a standby state. After step S004 is executed, next step S005 is executed.

  In step S005, the power failure detection means 13 detects the power failure recovery of the building. If the power failure has not recovered (N in step S005), the power failure recovery detection in step S005 is repeatedly executed. Therefore, the car 1 stops in a standby state until the power failure is restored. When a power failure recovery is detected (Y in step S005), the power supply of the elevator apparatus is switched from the battery to the commercial power supply, and then step S006 is executed.

  In step S006, the operation control means 12 returns the car 1 to normal operation. Then, the processing operation ends.

  In step S007, which is executed when it is determined in step S002 that it is outside the automatic door opening range (N in step S002), the diagnosis result of the previous (latest) battery deterioration state executed by the battery diagnosis unit 14 is executed. Is determined to be normal. If it is determined to be normal (Y in step S007), then step S008 is executed. If the previous battery diagnosis result is abnormal (N in step S007), the process branches to the processing operation of FIG. 3 described later (A).

  In step S008, the operation control means 12 causes the car 1 to travel to the automatic door opening range on the nearest floor at a lower speed than during normal operation. Once step S008 is executed, the above-described steps S003 to S006 are then executed, and the processing operation ends.

  FIG. 3 is a flowchart showing the processing operation between the branch A and its return B and C in the processing operation in FIG.

  Branch A in the processing operation of FIG. 2 described above, that is, the stop position of the car 1 is outside the automatic door opening range (N in step S002 in FIG. 2), and the result of the previous battery diagnosis is abnormal (in step S007). N) and step S009 of FIG. 3 are executed.

  In S009, the operation control means 12 determines whether the operation of the car 1 before the occurrence of the power failure is traveling to the destination floor registered by the car call button 7. That is, it is determined whether or not a power failure has occurred during car calling. If the car call is running (Y in step S009), then step S010 is executed. When the car is running other than the car call, it is determined that the car 1 is unmanned, and the process returns to FIG. 2 (C), step S005 is executed, and the car 1 is in a standby state until the power failure is restored. It is. As a result, if the car 1 is unattended at the time of a power failure, the car is in a stand-by state with being stopped, so that the battery power consumption can be suppressed. It is possible to secure electric power used to open the door.

  In step S010, the travel distance calculation means 15 calculates the distance from the stop position of the car 1 to the nearest floor calculated based on the signal from the rotary encoder 10 until immediately before the occurrence of the power failure. Further, in this step S 010, the travel distance calculation means 15 measures the load in the car 1 of the car 1 measured by the load detection means 8 and the remaining battery level calculated by the battery diagnosis means 14. The travel distance possible by the car 1 is calculated with respect to the load and the calculated remaining battery level. In the present embodiment, the movement distance is calculated using the equations (1) and (2).

(Remaining battery level) = (Discharge current value at diagnosis [A]) x (Discharge time at diagnosis [s]) ... (1)
(Movement distance) = (Battery level) / (Torque value required for driving [A]) x (Running speed [m / s]) ... (2)
In the equation (1), the discharge current value at the time of diagnosis is a predetermined short-time discharge current required for emergency operation in the battery deterioration state diagnosis performed by the battery diagnosis means 14 when the car is unattended. It is the value of the discharge current when flowing for a time, and the discharge time is a value of this short time. Although the previous diagnosis result of the battery deterioration state is “abnormal” (see step S007 in FIG. 2), since the diagnosis itself is properly executed, the battery has a discharge current and a discharge time at the deterioration state diagnosis. It can be estimated that the discharge at is in a possible state. Therefore, it is estimated that at least the amount of stored electricity that can be discharged with the discharge current and the discharge time at the time of deterioration state diagnosis remains, and in equation (1), the amount of discharge charge at the time of battery deterioration state diagnosis Is considered.

  In equation (2), the torque value necessary for traveling is the current value for the motor that drives the hoisting machine 4 to generate torque according to the load in the car 1. The traveling speed is a traveling speed at a low speed traveling at the time of a power failure, and is a speed lower than a normal driving speed.

  By using the expressions (1) and (2), the movement distance possible by the car 1 with respect to the remaining battery level can be easily calculated in a short time.

  The remaining battery level may be set using a known measurement technique based on the terminal voltage of the battery.

  In step S011 executed after step S010, the operation control means 12 compares the distance to the nearest floor calculated in step S010 with the movement distance calculated from the remaining battery level in step S010. It is determined whether the distance to the nearest floor is less than the moving distance. If the distance to the nearest floor is less than or equal to the moving distance (Y in step S011), the process returns to B in the flow of FIG. 2, and step S008 is executed, so that the car 1 travels at a low speed to the nearest floor. If the distance to the nearest floor is greater than the moving distance (N in step S011), then step S012 is executed.

  In step S012, the operation control means 12 determines whether the current stop position of the car 1 is outside the rescue range. If it is outside the rescue range (Y in step S012), step S013 is executed, and if it is within the rescue range (N in step S012), step S015 is executed.

  Here, the rescue range is outside the automatic door opening range, but is a range in which passengers in the car 1 can be dismounted by manual door opening by a specialist engineer, and the car position provided in the car 1 is detected. The determination is made based on the signal from the means 9.

  In step S013, the operation control means 12 compares the travel distance calculated in S010 with the distance from the stop position of the car 1 to the rescue range, and the car 1 can travel within the rescue range. Is determined. Here, when the moving distance is larger than the distance to the rescue range, it is determined that the vehicle can travel within the rescue range. Further, when the moving distance is smaller than the distance to the rescue range, it is determined that the vehicle cannot travel to the rescue range. If it is determined that traveling is possible (Y in step S013), step S014 is executed. If it is determined that traveling is not possible (N in step S013), step S016 is executed.

  In step S014, the operation control means 12 causes the car 1 to travel to the rescue range at a low speed. After step S014 is executed, step S015 is executed.

  In step S015, the external reporting unit 16 issues an abnormal report to a control center (not shown). In addition, information indicating that the car 1 is stopped within the rescue range is added to the abnormal report. After step S015 is executed, the process returns to the processing operation of FIG. 2 (C), step S005 is executed, and the car 1 is in a standby state until the power failure is restored.

  In step S016, the external reporting unit 16 issues an abnormal report to a control center (not shown). In addition, information indicating that the car 1 is stopped outside the rescue range is added to the abnormal alert. After step S016 is executed, the process returns to the processing operation of FIG. 2 (C), step S005 is executed, and the car 1 is in a standby state until the power failure is restored.

  As described above, according to the present embodiment, even when the battery is in an abnormal state at the time of a power failure, the elevator can be run as far as possible. In addition, when a rescue by a specialist engineer is necessary, an abnormal report is immediately issued to the outside, and information indicating whether the car 1 is stopped within the rescue range is added to the information of the abnormal report. Since the expert engineer can accurately grasp the state of the elevator, the time to rescue the passenger can be shortened.

  In addition to anomaly reporting to the outside, the passengers in the car cabin may be notified of the operating state of the elevator. That is, the elevator apparatus of FIG. 1 displays and guides the state of the elevator to a display device (for example, a liquid crystal display) or a voice guidance device (for example, a speaker) provided in a car room, and the guidance device. You may provide the internal reporting means (one function of the elevator control apparatus 6) to command.

  Here, the display contents and guidance contents are the operation state of the elevator, that is, “Slow down to the nearest floor, then stop and open” (driving state A), “Run to the rescue range, stop, Closed standby (waiting for manual door opening by expert engineer) "(operating state B)," Stand by standby (manual engineer opening by manual engineer or waiting for rescue operation) "(operating state C) It is preferable to change accordingly. In this case, when it is determined in step S007 in FIG. 2 that the battery is normal (driving state A), in step S012 in FIG. 3, it is determined that the battery is not out of the rescue range, that is, within the rescue range (state C: However, when waiting for manual door opening), when it is determined in step S013 in FIG. 3 that it is possible to travel (state B), when it is determined in step S013 in FIG. 3 that it is not possible to travel (state C: However, waiting for rescue work) In response to this, the internal reporting means commands a different display or guidance to a display device (for example, a liquid crystal display) or a voice guidance device (for example, a speaker).

  By such display or guidance, passengers in the car room can know the operating state of the elevator, so that a sense of security can be provided to the passengers during a power failure. In addition, it is preferable to provide an independent battery separately from the battery of the battery device 11 as a power source for the power failure at the time of power failure so that the display device and the voice guidance device can operate reliably.

  In addition, this invention is not limited to embodiment mentioned above, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  For example, the elevator device may include a machine room in which a hoisting machine and a control device are installed. The elevator device may be a so-called machine room-less elevator in which a hoisting machine and a control device are installed in a hoistway.

DESCRIPTION OF SYMBOLS 1 Riding car 2 Counterweight 3 Main rope 4 Hoisting machine 5 Warping car 6 Elevator control device 7 Car call button 8 Load detection means
9 Car position detection means 10 Rotary encoder 11 Battery device 12 Operation control means 13 Power failure detection means 14 Battery diagnosis means 15 Travel distance calculation means 16 External notification means

Claims (7)

In the event of a power failure, an elevator landing operation device that uses the battery as a power source and moves the car to the nearest floor,
A distance calculating means for calculating a distance from the stop position of the car to the nearest floor, and calculating a movable distance of the car based on a remaining amount of the battery;
Operation control means for determining execution of traveling to the nearest floor of the car based on a comparison between the distance to the nearest floor and the movable distance;
An elevator landing power operation device characterized by comprising a power failure. An elevator power outage landing operation device according to claim 1,
When the distance to the nearest floor is less than or equal to the movable distance, traveling to the nearest floor is executed, and when the distance to the nearest floor is greater than the movable distance, A landing operation device at the time of an elevator power failure characterized by not running to the floor. An elevator power outage landing operation device according to claim 2,
When traveling to the nearest floor is not performed, if the stop position of the car is outside the rescue range, the elevator travels to the rescue range and then enters an idle state. Landing operation device at power failure. An elevator landing operation device according to claim 3,
When an elevator power failure occurs, when traveling to the nearest floor is not executed and the stop position of the car is within the rescue range, the car is placed in a standby state at the stop position. Landing operation device. An elevator power outage landing operation device according to claim 1,
The operation control means determines an execution of traveling to the nearest floor of the car when a power outage occurs during car call travel, and is an elevator power outage landing operation device. An elevator power outage landing operation device according to claim 1,
Furthermore, the battery diagnostic means for diagnosing the deterioration state of the battery,
The operation control means determines an execution of traveling to the nearest floor of the car when the diagnosis result stored in the battery diagnosis means is abnormal. An elevator power outage landing operation device according to claim 1,
Furthermore, the battery diagnostic means for diagnosing the deterioration state of the battery,
The battery diagnostic means discharges the battery at a predetermined current for a predetermined time at the time of diagnosis,
The moving distance calculation means calculates the remaining amount of the battery based on the predetermined current and the predetermined time.

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