JP4414710B2 - Elevator failure display device - Google Patents

Description

  The present invention relates to an elevator failure display device, and more particularly to an energy saving elevator failure display device to which a power storage device such as a secondary battery is applied.

  An elevator using a conventional power storage device converts AC power output from a three-phase AC power source into DC power by a converter and supplies it to a DC bus. The DC of the DC bus is converted to a desired variable voltage and variable by an inverter. It converts to alternating current of frequency and supplies it to the AC motor, and controls the raising and lowering of the cab and the counterweight coupled to the rope wound around the hoisting machine driven by this AC motor, and secondary to the DC bus Connect a power storage device such as a battery to store the DC power by forming a charging circuit from the DC bus during the regenerative operation of the elevator, such as when the cab is lifted with no load or when the cab is lowered with a fixed capacity. A discharge circuit is formed during powering operation of the elevator, such as a descent operation of a cab without load and a descent of a cab with a capacity, and the accumulated DC power is transferred to a DC bus. It is adapted to supply. (For example, refer to Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2002-2111855 (paragraphs 0002-0004, FIG. 4) JP 2001-005377 A

  This type of conventional elevator is configured as described above, and the regenerative power generated during the regenerative operation of the elevator is charged into the power storage device, and when the commercial power supply fails, the power stored before the power failure is used. In order to operate the elevator continuously, if the power storage device fails due to some trouble, the charging / discharging function stops, but the elevator can be used normally, so the elevator can continue without being aware of the failure of the power storage device There is a problem in that a failure of the power storage device is detected only when a power failure occurs.

Note that this problem can be avoided when the customer has a maintenance contract because the failure can be displayed to maintenance personnel by a remote alarm device or the like. In the case where the maintenance contract is not contracted, there is no method other than using a special device or directly accessing the power storage device installed in the hoistway as the means for displaying the failure to the outside.
In addition, the power storage device needs to be forcedly charged at regular intervals to prevent a decrease in charging capacity. However, as with the above problem, special equipment is used to determine whether or not forced charging has started. Otherwise, there was a problem that it would not be possible to judge outside.

  The present invention has been made to solve the above-described problems, and is an elevator that can display a failure of a power storage device and can also determine that the power storage device is in a forced charging state. An object of the present invention is to provide a fault display device.

The elevator failure display device according to the present invention converts alternating current power into direct current power and supplies it to a direct current bus, converts the direct current of the direct current bus into an alternating current of variable voltage and variable frequency by an inverter, and supplies the alternating current to an alternating current motor. The AC motor drives an elevator, and a power storage device is connected to the DC bus, DC power is stored in the power storage device from the DC bus during regenerative operation of the elevator, and the power is operated during power operation of the elevator. In an elevator that supplies DC power from a power storage device to the DC bus, when a failure occurs in the power storage device, when the power storage device is in a forced charging state by the DC bus, the elevator is When automatic operation is performed during a power outage when an AC power outage occurs, or automatic operation is performed during a power outage It is obtained by adapted to display on a single display lamp provided on the elevator cab to distinguish in each case when non.

  Since the failure display device for an elevator according to the present invention is configured as described above, it is possible to prevent a situation in which the elevator is continuously used despite the failure of the power storage device, and the power storage device is compulsory. Since it can be determined in the car room that the battery is in a charged state, the maintainability of the power storage device can be improved.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an overall control configuration of the elevator according to the first embodiment.
As shown in FIG. 1, Embodiment 1 is connected to the above-described DC bus, and stores a power storage device 2 that stores regenerative power generated during regenerative operation of an elevator, and determines a failure in the power storage device 2. A failure determination device 3 that generates an output corresponding to the content of the power supply, a determination that the power storage device 2 is forcibly charged by a commercial power source, and a forced charge determination device 4 that generates an output corresponding to the power storage device 2 and the failure determination described above. An elevator control circuit 1 that receives outputs from the device 3 and the forced charge determination device 4 and controls various indicators of the display device 5 in the elevator cab.

  In addition, the display device 5 in the cab is for displaying the state of the elevator to passengers or maintenance personnel, and is composed of each element as shown in FIG. That is, 6 is a floor indicator that displays the floor position of the elevator cab to the passengers, 7 is an upper or lower direction indicator that displays the moving direction of the elevator, and 8 is a fire, earthquake, or malfunction. When there is a power failure, an exit guidance indicator lamp 9 that instructs the passenger to get off, 9 is a power failure indication that informs the passenger that the elevator is operating due to the discharge of power stored in the power storage device 2 when a power failure occurs This is an automatic operation indicator.

FIG. 3 shows an example of a failure information reporting signal output from the failure determination device 3 to the elevator control circuit 1 and displayed on the car interior display device 5. It is given to the automatic operation indicator lamp 9 at the time of a power failure of the car indoor display device 5 through the control circuit 1. As shown in the figure, the signal form is a special blinking signal, the blinking cycle is 0.6 sec on time and 1.2 sec per 0.6 sec extinction time, and after 3 cycles of flickering, it is extinguished for 2 cycles.
Thereafter, this is repeated. The failure display is performed by such blinking of the automatic operation indicator lamp 9 at the time of power failure.

Next, the operation of this embodiment will be described in detail using the flowchart shown in FIG.
In step S <b> 1, the failure determination device 3 detects a failure in the power storage device 2 and confirms whether failure information is reported to the elevator control circuit 1. If a failure is detected, the elevator control circuit 1 outputs the above-mentioned special blink signal to the automatic operation indicator lamp 9 at the time of power failure of the car interior display device 5 in step S2.

  As a result, the automatic operation indicator lamp 9 at the time of a power failure repeats lighting for 0.6 sec and extinguishing for 0.6 sec three times, followed by 2.4 sec. To implement. In step S1, if a failure of the power storage device 2 is not detected, it is confirmed in step S3 whether the power storage device 2 is in a forced charging state by a commercial power source and reported to the elevator control circuit 1. .

  If it is in the forced charging state, the elevator control circuit 1 outputs a blinking signal to the automatic operation indicator lamp 9 at the time of power failure of the car interior display device 5 in step S4. The signal in this case is different from the failure described above, and the automatic operation indicator lamp 9 at the time of power failure repeats lighting for 0.6 sec and extinguishing for 0.6 sec. (There is no 2.4 sec. Extinction.) If the forced charging state is not established in step S3, it is confirmed in step S5 whether or not the elevator is performing automatic operation during a power failure that operates when a power failure occurs.

  When the automatic operation at the time of power failure is performed, the elevator control circuit 1 outputs a lighting signal to the automatic operation indicator lamp 9 at the time of power failure of the car room display device 5 in step S6. Thereby, the automatic operation indicator lamp 9 at the time of a power failure lights continuously. If the automatic operation at the time of power failure is not performed at step S5, the elevator control circuit 1 outputs a turn-off signal to the automatic operation indicator lamp 9 at the time of power failure of the car interior display device 5 at step S7.

  Since this embodiment is configured as described above, it is possible to display the state of the power storage device 2 to the passengers using the car room display device 5 that is installed as a standard without requiring a special device. It is possible to prevent a situation in which the elevator is continuously used without giving any warning to the passengers even though the power storage device 2 is out of order.

In addition, since it is possible to know that the power storage device 2 is in the forced charge state while in the car room, the maintainability of the power storage device 2 can be improved.
In the above description, the special blinking signal output to the automatic operation indicator lamp 9 at the time of power failure is an example, and various kinds can be obtained by changing or combining the number of lighting, extinguishing, and blinking according to the failure contents. Needless to say, the failure information can be displayed in detail in the car room.

It is a block diagram which shows the whole control structure of the elevator by Embodiment 1 of this invention. 1 is a schematic diagram showing a configuration of a car room display device in Embodiment 1. FIG. 6 is a waveform diagram showing an example of a special blinking signal when a failure occurs in Embodiment 1. FIG. 3 is a flowchart for explaining the operation of the first embodiment.

Explanation of symbols

1 Elevator control circuit,
2 power storage device,
3 failure determination device,
4 forced charge determination device,
5 Car room display device.

Claims (3)

AC power is converted to DC power and supplied to a DC bus, the DC of the DC bus is converted to AC of variable voltage and variable frequency by an inverter and supplied to an AC motor, and an elevator is driven by this AC motor, A power storage device is connected to the DC bus, DC power is stored in the power storage device from the DC bus during regenerative operation of the elevator, and DC power is supplied from the power storage device to the DC bus during power operation of the elevator. In the elevator to be supplied, when a failure occurs in the power storage device, when the power storage device is in a forced charging state by the DC bus, the elevator operates automatically during a power failure when the AC power failure occurs If you are carrying out, or to distinguish the case of each of the If you have not implemented the automatic operation during a power outage error Failure indicator device for an elevator, characterized in that as may be displayed on a single display lamp provided on the beta cab.   2. The elevator failure display according to claim 1, wherein, when the power storage device is in a forced charging state from the DC bus, the indicator lamp flashes at a flashing timing for forced charging display. apparatus.   2. The elevator failure display device according to claim 1, wherein the lighting state of the indicator lamp is set to a different content corresponding to the failure content.

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