JP2011168372A - Display device at power source cutoff of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly rescue passengers shut in a car 2, for relieving a sense of unease of the passengers, by guiding a position and a failure state of the car 2 on a car position display 4 and an external automatic communicator 51 backed up by a battery, by detecting cutoff of a power source for power. <P>SOLUTION: When the car 2 stops outside a door zone by power source cutoff, a failure state is guided in the car by a power source cutoff guide display lamp 31 backed up by the battery, and a sense of unease of the passengers is relieved by flickeringly turning on a car position display lamp 4. While, a control panel 5 in a machine room is provided with the automatic communicator 51, to automatically inform the power source cutoff and door zone-outside stopping to an external part. In a landing hall, a car position is flickeringly displayed by car position display lamps 112 and 152, as a help to rescue work. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a display device when an elevator power is cut off, and relates to a display device when a power source is cut off by a circuit breaker due to a power source failure.

  Under the Building Standards Act in Japan, elevators are required to stop quickly with a brake when a power failure occurs. For this reason, if a power failure occurs during traveling, the vehicle is immediately stopped by a brake, so that there are many stops outside the door zone where the door can be opened and closed.

  Further, when a power failure occurs, there is a possibility that the car position display lamp in the car or the car position display lamp in the hall cannot be turned on due to the power interruption by the power circuit breaker.

  In addition, there is a specification added by this kind of correspondence that automatically reports to the outside in the event of a failure, but automatic notification is possible during normal power purchase, but automatic notification is not possible when the power is shut off.

  Patent Documents 1 and 2 disclose that in an express elevator including a non-stop floor, when the elevator stops due to a power failure, the stop floor is displayed on the monitoring panel.

  Further, in Patent Document 3, when the hall call button on the first floor is operated due to a power failure, the power is switched to the battery, and the floor where the car is stopped is displayed on the indicator on the first floor hall. It is disclosed to display.

JP-A-8-151176 Japanese Patent Laid-Open No. 7-232871 JP 63-47281 A

  Patent Documents 1 and 2 are based on the premise that a monitoring panel or a self-developed system is installed, and it is difficult in terms of cost to install such a large-scale device for all elevators.

  In spite of this, the passengers in the car that were stopped due to the power shut-off could not promptly confirm the situation, which sometimes caused the passengers to feel uneasy.

  In any case, in Patent Documents 1-3, when the power is shut off, the passengers in the car cannot quickly grasp the situation.

  An object of the present invention is to immediately inform the passengers in the car of the situation when the elevator stops due to the interruption of the power supply, and to alleviate the passenger's anxiety.

  It is another object of the present invention to provide a display device capable of promptly executing rescue work for passengers in a car that is in a confined state when the power is shut off.

  In a preferred embodiment of the present invention, an electric motor that drives an elevator up and down, an inverter that supplies a three-phase alternating current of variable voltage and variable frequency to the electric motor, and a power supply system that supplies power to the inverter from a purchased power source are generated. A circuit breaker that shuts off the power supply system in the event of a power failure, a hall call button located on each floor served by the elevator car, a destination floor call button located within the car, and a car located within the car And a power-off detection device for detecting the interruption of the power supply by the circuit breaker, in a display device at the time of power-off of the elevator equipped with a car position display device for displaying the current position floor of the car A power-off display device that is arranged in the car in accordance with the operation of the power-off detection device and performs a display relating to power-off. Characterized by comprising an automatic communicator to automatically reported to the outside in response to the operation of the power-off detection device.

  Further, in another desirable embodiment of the present invention, a car position signal output holding device that holds a signal output related to a stop position of a car that has stopped even if the supply of power is interrupted, and a battery backup, the car position A car position display device at the time of power shut-off is provided that displays the stop position of the car in the car based on a signal from the signal output holding device.

  Further, in a specific embodiment, the car position display device when the power supply is abnormal displays the car position when the power is shut off using a car position indicator in the car that displays the car position during normal operation. To do.

  Furthermore, in a specific embodiment, a car position display device at the time of power shut-off is provided that displays the stop position of the car in the manager's room based on a signal from the car position signal output holding device.

  Furthermore, in a preferred embodiment of the present invention, there is provided a car position display device at the time of power-off that is backed up by a battery and displays a stop position of the car on the elevator hall based on a signal from the car position signal output holding device. .

  According to a preferred embodiment of the present invention, when the elevator stops due to power shutoff and becomes locked in the car, the situation is guided into the car, thereby relieving passengers' anxiety and providing a sense of relief. be able to.

  Further, when the power is turned off, the current position of the car is displayed on the landing or the manager room, so that the passenger can be rescued promptly.

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

1 is an overall image diagram showing an overview of a display device when an elevator is powered off according to an embodiment of the present invention. 2 is an operation flowchart according to the embodiment of the present invention shown in FIG. 1 is a circuit configuration diagram of a display device when an elevator is powered off according to a specific embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall image diagram showing an overview of a display device when an elevator is powered off according to an embodiment of the present invention.

  The elevator of the present embodiment is an elevator installed in a building on the first floor (1F) to the fifth floor (5F). In particular, in this figure, the second floor (2N) to the fourth floor (4N) are not used. The case where it is a stop floor is shown.

  On the first floor hall 1F and the fifth floor hall 5F, hall operation panels 11 and 15 are arranged. These hall operation panels 11 and 15 are provided with hall call buttons 111 and 151, and car position display lamps 112 and 152, respectively. In recent elevators, a car position display lamp is often not provided at a landing, but any of them may be used in the present invention.

  In the elevator car 2, the operation panel 3 and the car position display lamp 4 are provided as usual, and the control panel 5 is installed in the upper machine room.

  Here, in this embodiment, a power shut-off display lamp 31 is additionally installed in the in-car operation panel 3. In the control panel 5, an automatic notification device 51 for notifying the outside of power supply interruption is provided.

  FIG. 2 is an operation flowchart according to the embodiment of the present invention shown in FIG. 1, and the operation of the embodiment of the present invention will be described with reference to FIGS.

  As shown in step 201 in FIG. 2, it is assumed that an abnormality has occurred in the power source and the power source has been shut off while the elevator is running. As a result, it is assumed that the elevator is braked and stopped, but stopped outside the door zone where the door can be opened and closed. At this time, in step 202, it is detected that the power is shut off and the level is stopped (a). Then, in step 203, the power-off guidance display lamp 31 in the car 2 uses the power backed up by the battery to display a guidance in an expression that the passenger does not worry about (b). At the same time, the stop position of the car is displayed by blinking the car position display lamp 4 in the car, and the passenger's anxiety is eased (c).

  For the hall, the stop position outside the level of the car 2 due to the power cut-off is displayed by blinking the car position display lamps 112 and 152 at the hall (d).

  On the other hand, in step 204, the automatic reporting device 51 in the control panel 5 is activated by the battery backup power source, and the outside stop of the car 2 due to power interruption is reported to the outside such as the manager room or the maintenance monitoring center. (E). The car 2 stands by at the stop position until rescue is started from the outside.

  Thereby, a maintenance worker or the like who rescues the confined passenger can quickly respond because the power supply is cut off and the stop position outside the level of the car 2 is clear.

  FIG. 3 is a circuit configuration diagram of the display device when the elevator is powered off according to a specific embodiment of the present invention, which will be described in detail below.

  First, as a main circuit, a three-phase alternating current is received from an alternating current power source 6 that is a purchased power through a circuit breaker 7 and is converted into direct current by a converter 8. This direct current is inversely converted into a three-phase alternating current of variable voltage and variable frequency by the inverter 9 to control the alternating current motor 10 at a variable speed.

  Next, as for the control circuit, the portion indicated by the bold line in FIG. That is, DC 24 [V] obtained by stepping down and rectifying the purchased power is applied between the terminals P24 and N24. Any one of the I / O contacts 18 (Z911,..., Z915) for outputting the current position signal of the car 2 corresponding to the stop floor of the car is ON, and the car position display lamp in the car 2 described above. 4. The platform car position display lamps 112 and 152 light up and display the numbers corresponding to the stop floors. For the sake of simplicity, only a single lamp representing the stop floors 1 to 5 is shown in the figure, but in reality, it is arranged in the car, on each floor, and / or in the manager room. As described above, the car position display lamps 112,... 152 are provided at the landing, and the car position is displayed in the normal state from the microcomputer in the machine room control panel 5 by the output I / O contact 18 of FIG. .

  The following thin line portions are circuits / devices added as an embodiment of the present invention to the thick line portions in FIG.

  First, even when the power is cut off, the signal output related to the stop position of the stopped car 2 is retained even when the power supply from the terminals P24-N24 is cut off so that the stop position of the car 2 is not lost. Keep relays 17 (KRY1 to KRY5) are provided as cage position signal output holding devices. These are excited by another I / O contact 19 (Z911,... Z915) that outputs the current position signal of the car 2 described above.

  These keep relays 17 (KRY1 to KRY5) maintain the open / closed state of the internal contacts at that time even when the power supply between terminals P24-N24 from power purchase is interrupted. Therefore, only one make contact (any one of KRY11 to KRY51) of the keep relay 17 (KRY1 to KRY5) corresponding to the stop floor of the car 2 is ON even after the power source is shut off.

  Now, it is assumed that the circuit breaker 7 shuts off the power by detecting an overcurrent when an abnormality such as a short circuit due to aging deterioration of the converter 8 or the inverter 9 occurs. When the circuit breaker 7 trips, as described above, the elevator is braked and the car 2 stops at an arbitrary position.

  When the breaker 7 trips, the break detection contact 12 is turned on, the break detection relay 13 (KDX) is excited by the battery 16 (BAT1 to BATn), the make contacts KDX1 to KDX4 are turned on, and the break contact KDX5 is turned off. .

  When the make contact KDX1 is turned on, the power shut-off display lamp 31 is turned on to notify the passengers in the stopped car 2 that the power shut-off has occurred (that there was some trouble but no worries). Further, the flicker relay 14 (FL) is excited by the make contact KDX2, and the contacts FL1 to FL5 flicker. At the same time, one of the above-described keep relay contacts KRY11 to KRY51 corresponding to the stop position of the car 2 is ON, so the make contact KDX3 of the shutoff detection relay 13 (KDX) and the flicker relay contacts FL1 to FL5 One of the car position display lamp 4 in the car and the car position display lamps 112 to 152 in the car via one of them and one of the keep relay contacts KRY11 to KRY51 corresponding to the stop position of the car 2. In addition, a car position display lamp (not shown) in the manager's room blinks.

  In this way, when the car 2 stops outside the level due to power interruption, the car position display lamps in the car 2, the landing, and the manager's room blink the numbers corresponding to the stop floor. indicate.

  On the other hand, when the make contact KDX4 of the shut-off detection relay 13 (KDX) is turned on, the automatic notifier 51 in the control panel 5 is activated and the outside of the car 2 due to the power shut-off to the manager room or the maintenance management center. Report out of level stop.

  In this way, by battery backup, the automatic notification device 51 in the control panel 5 automatically notifies the outside of the power supply cutoff, and the car 2 is made to stand by at the stop position until rescue is started from the outside.

  As a result, a maintenance worker or the like who rescues the confined passenger can quickly respond because the power supply is cut off, and the stop and the position of the car 2 are cleared.

  In this embodiment, the backup battery 16 is a floating charging system, and includes a plurality of batteries that can supply power for a predetermined time in parallel. As is well known, the floating charging method connects a load and a storage battery in parallel to the DC output of the rectifier, constantly applies a constant voltage to the storage battery to maintain the state of charge, and simultaneously supplies power from the rectifier to the load. In addition, power can be supplied from the storage battery to the load without interruption during a power failure or load change.

  In the present embodiment, the indefinite floor zone has been described as 2N to 4N, but the present invention can be similarly applied to any form of elevator.

  11 ... 1st floor hall operation panel, 111 ... 1st floor hall call button, 112 ... 1st floor car position display lamp, 15 ... 5th floor hall operation panel, 151 ... 5th floor hall call button, 152 ... 5th floor Car position display lamp, 2 ... Riding car, 3 ... In-car operation panel, 31 ... Power-off guidance display lamp, 4 ... Car position indication lamp in the car, 5 ... Control panel, 51 ... Automatic alarm, 6 ... AC power source, 7 ... Circuit breaker, 8 ... Converter, 9 ... Inverter, 10 ... AC motor, 12 ... Power-off detection contact, 13 ... Power-off detection relay, 14 ... Flicker relay, 16 ... Battery, 17 ... Power-off Keeping relay for hour car position output, 18, 19 ... Car position output I / O contact.

Claims (9)

An electric motor that drives the elevator up and down, an inverter that supplies a three-phase alternating current of variable voltage and variable frequency to the electric motor, and the power supply system that is cut off when a power supply abnormality occurs in the power supply system that supplies power to the inverter from a purchased power supply A circuit breaker, a hall call button located at the landing on each floor served by the elevator car, a destination floor call button located within the car, and a current floor of the car located within the car In a display device at the time of power-off of an elevator equipped with a car position display device for displaying
A power-off detection device that is backed up by a battery and detects the interruption of the power supply by the circuit breaker; and a power-off display device that is arranged in a car in accordance with the operation of the power interruption detection device and performs display related to the power interruption. A display device at the time of power-off of an elevator, comprising: an automatic notification device that automatically notifies the outside according to the operation of the power-off detection device.   2. The car position signal output holding device for holding a signal output relating to the stop position of the car that has stopped even if the supply of power is interrupted, and a battery backup, and a signal from the car position signal output holding device. A display device at the time of power-off of an elevator, comprising a car position display device at the time of power-off that displays a stop position of the car on the basis of the car.   3. The car position display device at the time of power failure according to claim 2, wherein the car position indicator at the time of power shut-off is displayed using a car position indicator in the car that displays a car position during normal operation. Display device when the elevator power is turned off.   4. A car position signal output holding device for holding a signal output relating to a stop position of a car that has stopped even if the supply of electricity is interrupted, and a signal from the car position signal output holding device according to any one of claims 1 to 3. A display device at the time of power-off of an elevator, comprising: a car position display device at the time of power-off that displays a stop position of a car in a manager's room based on the above.   5. The car position display device at the time of power shut-off according to any one of claims 2 to 4, wherein the car is backed up and the stop position of the car is displayed on the elevator hall based on a signal from the car position signal output holding device. A display device for when an elevator is powered off.   6. The display device according to any one of claims 2 to 5, wherein the car position display device at the time of power-off is provided with means for blinking and displaying a car stop position.   7. The display at the time of power-off of an elevator according to claim 2, wherein the car position signal output holding device includes a keep relay that holds an open / closed state of an internal contact even when the power is cut off. apparatus.   The elevator according to any one of claims 2 to 7, wherein the elevator serves between a plurality of floors including non-stop floors, and the car position signal output holding device includes a plurality of floors including the non-stop floors. The signal output related to the floor at the stop position of the car is held, and the car position display device at the time of power shutoff displays the car position at the time of power shutoff including the non-stop floor. The display device at the time of power-off of an elevator characterized by being configured in the above.   8. When the power of an elevator is turned off, wherein the battery backup is formed by a plurality of batteries connected in parallel and a floating charging device for floating charging the plurality of batteries. Display device.

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