JP2014118232A - Elevator control system, and method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue an elevator service before and after a power failure notified in advance without wasting the capacity of a storage battery.
An elevator control system includes a storage battery, a detection device that detects a power failure of a commercial power source, a switching device that switches power to the storage battery in response to the detection of the power failure, a power failure start time notified in advance, and a power failure When the remaining time until the start is within a predetermined time and the car is in a state where the operation mode can be switched from the normal operation mode to the power failure preparation operation mode that operates at a speed lower than the rated speed of the elevator in the normal operation mode. The elevator control device having a main control device that switches the operation mode to the storage battery operation mode by the storage battery in response to the switching of the power supply to the storage battery, switching the operation mode to the power failure preparation operation mode, and
An elevator drive control device that controls the operation of the car according to the operation mode from the elevator control device is provided.
[Selection] Figure 1

Description

  The present invention relates to an elevator control system including a storage battery such as a battery that can supply power during a power failure, and a method thereof.

  In an elevator that can supply power from a storage battery at the time of a power failure, even if the elevator stops due to a power failure, the operation can be resumed by the storage battery power supply. In a state in which the start time of a power failure is notified in advance, such as a power failure due to construction or a planned power failure, in Patent Document 1, the use is stopped by putting the elevator in a sleep state before the time when the power failure is scheduled. Has been proposed.

  Patent Document 2 discloses a means for reducing power consumption and suppressing battery consumption by operating an elevator at a low speed when a power failure occurs and the operation is switched to a storage battery power source.

JP-A-58-052158 JP 2007-238316 A

  However, in the technique of Patent Document 1, in spite of the power supply from the power company, the operation of the elevator is stopped before the start of the planned power outage, so the convenience is impaired and the user is burdened. There is. On the other hand, when switching to the operation by the storage battery before the power failure, there is a problem that the storage battery is consumed excessively for the elevator operation even though the commercial power is supplied.

  Further, in the technique of Patent Document 2, since the elevator is traveling at the rated speed at the moment when the power failure occurs, if the power failure occurs during traveling, the elevator makes an emergency stop from the rated speed. ) May cause harm to passengers.

  Therefore, there is a need for an elevator control system that continues service before and after a power failure that has been notified in advance without wasting capacity of the storage battery when receiving commercial power.

  The disclosed elevator control system includes a storage battery, a detection device that detects a power failure of the commercial power source, and a switching device that switches the power source from the commercial power source to the storage battery in response to the detection of the power failure of the commercial power source. Also, a communication device that inputs power failure start time information notified in advance, a storage device that stores power failure start time information input by the communication device, and a remaining time until the power failure starts with reference to the power failure start time information of the storage device Is within the specified time and the elevator car is in a state where the operation mode can be switched from the normal operation mode to the power failure preparation operation mode that operates at a speed lower than the rated speed of the elevator in the normal operation mode. An elevator control device having a main control device for switching the operation mode to the storage battery operation mode by the storage battery in response to the notification of the power supply switch from the commercial power supply to the storage battery from the power storage device Elevator drive that controls the operation of the elevator car according to the operation mode from the elevator controller Equipped with a control device.

  According to the present invention, since the service is performed using the commercial power supply until immediately before the occurrence of the power failure notified in advance, the service can be continued before and after the power failure notified in advance without wasting the storage battery.

It is a whole elevator control system lineblock diagram. It is a block diagram of an elevator control apparatus. It is a process flowchart by the main controller of an elevator controller. It is a power failure preparation process flowchart. It is a figure which shows the running curve of the cage | basket | car of an elevator.

  The whole structure of an elevator is demonstrated using FIG. As shown in FIG. 1, the elevator is normally operated by a commercial power source 101. In preparation for a power failure, the elevator includes a storage battery 102, a detection device 112 that detects a power failure / recovery of the commercial power supply 101, and a power storage device 103 that includes a switching device 104 that switches a power supply source between the commercial power supply 101 and the storage battery 102. Is provided. The switching device 104 is controlled by a signal line 116 from the detection device 112. The storage battery 102 is a DC output, but supplies electric power having the same voltage as that of the commercial power supply 101 through DC / AC conversion (not shown). The elevator further includes an elevator control device 105 that controls operation of the elevator, guidance to passengers, and the like, and an elevator drive control device 107 that is controlled by the elevator control device 105 via the signal line 115 and controls the driving of the electric motor 106. . The elevator drive control device 107 is controlled according to the operation mode by the elevator control device 105. The elevator further includes a signal line 113 for transmitting power supply source information, remaining capacity information of the storage battery 102 and the like from the power storage device 103 to the elevator control device 105, a car 108 that moves up and down the hoistway by the electric motor 106, and a rope 109. A counterweight (CW) 110 that balances with the car 108 and a guidance device 111 (display and speaker) for notifying passengers of the operation status of the elevator from the elevator control device 105 via the signal line 114 are provided. The signal line 114 is also used by the elevator control device 105 to acquire status information (speed, load, etc.) of the elevator car 108.

  As shown in FIG. 2, the elevator control device 105 is connected to a communication device 201, a storage device 202, and a main control device 203 that controls the operation of the elevator. Communication device 201 inputs and outputs information with power storage device 103, elevator drive control device 107 and car 108. The communication device 201 communicates with the outside and receives power outage information. The power failure information includes a power failure start time and a power failure end time.

The operation of the elevator control device 105 will be described with reference to FIG.
The elevator control device 105 is activated by turning on power or restarting by an operator. When activated, main controller 203 performs processing such as data initialization as initial processing (A100). Subsequent processing by the main controller 203 is repeatedly executed until the power is turned off or a program abnormality occurs.

  After the initial processing (A100), it is checked whether or not the communication apparatus 201 has input power failure information from the outside via the signal line 204 (A200). If power failure information has not been input, the processing proceeds to processing A400. If the communication device 201 has input power outage information, the power outage information input by the communication unit 201 via the signal line 204 is stored in the storage device 202 (A300).

  Based on the power failure start time included in the power failure information stored in the storage device 202, it is checked whether it is immediately before the power failure starts (A400). This check checks whether the remaining time until the power failure start time is equal to or less than a predetermined time T minutes. When the remaining time is equal to or less than the predetermined time T, it is determined that it is immediately before the start. If it is not immediately before the start, the routine proceeds to normal operation processing (A500).

  The normal operation processing (A500) provides services by inputting / outputting information necessary for operation such as car position and hall call via the signal line 114. The normal operation process (A500) is a normal operation mode controlled by the existing elevator control technology, and detailed description thereof is omitted. After a series of normal operation processes (A500), the process returns to process A200.

  If it is just before the start, the power failure preparation process (A600) is executed. Details of the power failure preparation process (A600) will be described later.

  When a power failure occurs, the detection device 112 of the power storage device 103 controls the switching device 104 via the signal line 116, the switching device 104 switches the power source from the commercial power supply 101 to the storage battery 102, and the power storage device 103 passes through the signal line 113. Thus, the elevator controller 105 is notified that the power source has been switched to the storage battery 102. Until this notification is received (until a power failure occurs), the main controller 203 of the elevator controller 105 continues the power failure preparation operation mode by the power failure preparation process (A600). The process (A800) is executed and the operation mode is switched to the storage battery operation mode. In the storage battery operation mode by the storage battery operation processing (A800), in order to lengthen the use time of the storage battery 102, the traveling target speed is lowered from the rated speed, the acceleration until the traveling target speed is reached, or the lighting in the car 108 Reduce the illuminance.

  When the power failure end time stored in the storage device 202 is reached and the power supply via the signal line 113 from the power storage device 103 is switched to the commercial power supply 101 is checked (A900), Using the guidance device 111 in the car 108 via the signal line 114, the user is informed of the end of the power failure and returns to the normal operation process (A200). If not, the remaining capacity of the storage battery 103 is checked via the signal line 113 from the power storage device 103 (A1000). If the remaining capacity is sufficient for the continuation of the storage battery operation mode, the storage battery operation processing (A800) is performed. Return. If the remaining capacity is insufficient, end processing (A1100) is executed. In the end processing (A1100), the car 108 is stopped on the nearest floor, the door of the car 108 is opened, and a guide device 111 (indicator or speaker) in the car 108 is used via the signal line 114 to To inform the user that the driving will be stopped.

The power outage preparation process (A600) will be described in detail.
Based on the traveling command information stored in the storage device 202 by the normal operation processing (A200), the traveling state of the car 108 is checked (A601). The running state may be based on information from a sensor that detects the position and speed of the car 108.

  When the car 108 is traveling at the rated speed, a landing instruction is output to the elevator drive device 107 so as to land on the next or next floor via the signal line 115, and the traveling state of the car 108 is checked. Return to (A601). The braking force accompanying the landing instruction at this time is a braking force when the vehicle is decelerated in the normal operation mode, and suppresses an impact caused by a speed change and ensures passenger safety. Therefore, in the deceleration in the normal operation mode, when it is not possible to land on the nearest floor scheduled to pass, a landing instruction is output so as to land on the next floor. The output of the landing instruction will advance the timing of switching the operation mode to the power failure preparation operation mode when there is a distance of several floors between the traveling position of the car 108 and the floor scheduled to stop. . The threshold of the remaining time until the power failure start time is set to T minutes, but if the T minutes are reduced as much as possible and the use time of the commercial power source 101 is increased, the car 108 having a long travel distance is running. Therefore, it is effective to advance the timing for switching the operation mode to the power failure preparation operation mode.

  When the car 108 has landed and is stationary, the operation mode is switched from the normal operation mode to the power failure preparation operation mode (A603). The power failure preparatory operation mode is a low-speed operation at a speed lower than the rated speed so as not to place a burden on the passenger even when the car 108 is in an emergency stop. Along with switching to the power failure preparatory operation mode, the elevator drive control device 107 is instructed at a predetermined low speed as the target travel speed. It is desirable that the low target travel speed to be instructed is the same as the target travel speed for battery operation. The elevator drive device 107 continues the power failure preparation operation with the commercial power source 101 until the power failure occurs. At this time, a message for driving mode or alerting is output via the signal line 114 using the guidance device 111 (display or speaker) in the car 108.

  The explanation of providing information from the guidance device 111 (display or speaker) to passengers is omitted, but detailed information is provided on the operation mode, alerting, power outage, and the like.

  The case where the car 108 is stationary and stationary is described as a car state in which the operation mode may be switched to the power failure preparation operation mode. However, the car 108 is not necessarily in a state where it is stationary and stationary. Explain a good case. FIG. 5 shows a running curve of the elevator car 108. The travel curve shows the distance from the X floor to the Y floor on the horizontal axis, and the speed of the elevator car 108 on the vertical axis. The travel curve 10 is a travel curve in the normal operation mode having a section in which the vehicle travels at a constant speed at the rated speed Vr. The travel curve 20 is a travel curve in the power failure preparation operation mode having a section in which the vehicle travels at a constant speed at a speed Vs lower than the rated speed Vr.

  It is only necessary to be able to travel along the traveling curve 40 that can smoothly transition from the speed Vss (position of distance P from the X floor) to the speed Vs while the car 108 is speeding up. If the speed Vss is lower than Vs by ΔV, the operation mode may be switched to the power failure preparation operation mode. The smooth transition means that the speed does not change abruptly at the time of the speed Vss and does not overshoot when the speed Vs is reached. Although the present embodiment has been described as an elevator with a counterweight (CW) 110, the speed Vss also exists for hydraulic elevators without the counterweight (CW) 110 and various elevators with different control methods. Can be requested.

  There is a section below the speed Vss even while the car 108 is decreasing in speed, but it does not stop at the predetermined position on the Y floor unless it is stopped on the Y floor in the normal operation mode. The operation mode is continued, and the switching of the operation mode is awaited until the car 108 is landed and stationary as described above.

  The charging of the storage battery 102 will be described. Since the storage battery 102 spontaneously discharges when the operation mode is the normal operation mode or the power failure preparation operation mode, the battery 102 is charged so that the rated capacity of the storage battery 102 is maintained. As the electric power for this purpose, electric power generated by a solar power generation apparatus installed on the roof of a building where the elevator is installed or regenerative electric power accompanying braking for stopping the elevator is used. The regenerative electric power is electric power generated when the electric motor 106 is operated as a generator in order to generate a braking force.

  Note that the amount of spontaneous discharge increases due to aging of the storage battery 102 and the charge amount of the storage battery 102 may be lower than the rated capacity when the communication device 201 inputs power failure information from the outside. The charge amount of the storage battery 102 is notified from the power storage device 103 to the elevator control device 105 via the signal line 113. In such a case, the elevator control device 105 starts from the commercial power source 101 from the time when the power failure information is input or more than a sufficient time before charging the capacity below the rated capacity from the power failure start time. The power storage device 103 is controlled so as to charge the storage battery 102 with the electric power. Thereby, since the charge amount of the storage battery 102 has reached the rated capacity at the time when the operation mode is switched to the storage battery operation mode, the operation time of the elevator in the storage battery operation mode can be extended.

  As described above, according to the present embodiment, by performing a “power failure preparation operation” using a commercial power supply before the start of a power failure notified in advance, the consumption of the storage battery is suppressed until the time of the power failure, and safety is ensured before and after the power failure. Service that does not impair the performance can be continued. In addition, by switching the operation mode before the occurrence of a power failure and lowering the rated speed of the elevator, it is possible to suppress the impact caused by an emergency stop while traveling and to ensure the safety of passengers.

  101: commercial power supply, 102: storage battery, 103: power storage device, 104: switching device, 105: elevator control device, 106: electric motor, 107: elevator drive control device, 108: car, 109: rope, 110: counterweight, 111 : Guide device, 112: Detection device, 201: Communication device, 202: Storage device, 203: Main control device.

Claims (8)

A storage battery,
A detection device for detecting a power failure of the commercial power supply;
In response to detection of a power failure of the commercial power source by the detection device, a switching device that switches the power source from the commercial power source to the storage battery,
A communication device that inputs power failure start time information notified in advance, a storage device that stores the power failure start time information input by the communication device, and the power failure start time information of the storage device, When the remaining time is within a predetermined time and the elevator car is in a state where the operation mode may be switched from the normal operation mode to the power failure preparation operation mode that operates at a speed lower than the rated speed of the elevator in the normal operation mode. The main control for switching the operation mode to the storage battery operation mode by the storage battery in response to a notification of switching of the power supply from the commercial power source to the storage battery from the power storage device. An elevator control device having a device;
An elevator control system comprising: an elevator drive control device that controls the operation of the car of the elevator according to the operation mode from the elevator control device.   The state where the state of the car of the elevator may be switched from the operation mode to the power failure preparation operation mode is a state where the car is landing and stationary. Elevator control system.   2. The guide device according to claim 1, further comprising: a guide device that notifies a passenger of an alert associated with the switching of the operation mode and the operation mode when the operation mode is switched by the main control device. Elevator control system.   When the operation mode is the normal operation mode or the power failure preparation operation mode, the power storage device uses the electric power generated by the solar power generation device provided in the building where the elevator is installed or the regenerative electric power of the elevator to store the storage battery. When the charging is performed and the charge amount of the storage battery is lower than the rated capacity at the time when the elevator control device inputs the power outage information from the outside, the elevator control device charges the storage battery using the commercial power source. The elevator control system according to claim 1, wherein the power storage device is controlled. The detection device detects a commercial power failure,
In response to the detection of the power failure of the commercial power source by the detection device, the switching device switches the power source from the commercial power source to the storage battery,
The communication device inputs power failure start time information notified in advance,
A storage device stores the power failure start time information input by the communication device,
The main controller refers to the power failure start time information of the storage device, the remaining time until the power failure starts is within a predetermined time, and the state of the elevator car changes the operation mode from the normal operation mode to the normal operation mode. When it is possible to switch to the power failure preparation operation mode that operates at a lower speed than the rated speed of the elevator, the operation mode is switched to the power failure preparation operation mode, and in response to switching of the power source from the commercial power source to the storage battery , Switching the operation mode to the storage battery operation mode by the storage battery,
An elevator drive control device controls operation of the car of the elevator according to the operation mode.   The state where the state of the car of the elevator may switch the operation mode to the power failure preparation operation mode is a state where the car is landing and stationary. Elevator control method.   6. The guidance device provided in the car notifies the passenger of a warning associated with the switching of the operation mode and the operation mode in accordance with the switching of the operation mode by the main controller. 6. Elevator control method.   When the operation mode is the normal operation mode or the power failure preparation operation mode, the power storage device uses the electric power generated by the solar power generation device provided in the building where the elevator is installed or the regenerative electric power of the elevator to store the storage battery. When the charge amount of the storage battery is lower than the rated capacity at the time of charging and inputting the power failure information from the outside, the main control device sets the power storage device to charge the storage battery using the commercial power supply. The elevator control method according to claim 5, wherein control is performed.

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