JP2009062152A - Remote monitoring system for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect whether a battery voltage is appropriate without inspecting the battery voltage by a full-time maintenance person. <P>SOLUTION: This remote monitoring system for an elevator comprises a voltage measuring section for measuring the voltage of a battery for supplying electric power to the elevator in place of a main power source when power supply from the main power source is stopped; a transmitting section 12 transmitting measured data measured by the voltage measuring part to an elevator monitoring center 5; a determining section 17 provided at the elevator monitoring center 5 to determine whether the battery voltage is appropriate by comparing the transmitted measured data with a preset reference voltage value; and a reporting section 16 provided at the elevator monitoring center 5 to report the determined result of the determining section 17. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator remote monitoring system, and more particularly to an elevator remote monitoring system capable of remotely monitoring whether or not the voltage of a battery for supplying electric power to an elevator during power failure is appropriate.

  Conventionally, normal maintenance of elevators is performed by dedicated maintenance personnel of elevator maintenance companies. Recently, a system for remotely monitoring the operation state of an elevator for 24 hours 365 days via a public line has become widespread.

  According to such a remote monitoring system, the operation state of the elevator installed in the building is constantly monitored by a remote monitoring device attached to the building where the elevator is installed, and various data collected during the monitoring are transmitted through the public line. It is sent to the monitoring center. If an elevator abnormality is detected from various data transmitted to the monitoring center, or if it is determined that there is a possibility of an abnormality, a dedicated maintenance staff will be dispatched to the elevator installation location. We are checking.

As an example of such an elevator remote monitoring system, one described in Patent Document 1 below is known. According to the elevator remote monitoring system described in Patent Document 1, when the main power supply is interrupted, electric power is supplied to the elevator from a battery that is an auxiliary power supply, and driving of the remote monitoring device is continued. If there is no abnormality in the monitoring information of the elevator after a lapse of a certain time after the power is supplied from the battery, the first switch circuit is turned off and the power supply from the battery is stopped. When the emergency call button is turned on after the power supply from the battery is stopped, the second switch circuit is turned on with the interphone battery as a power source, and the power supply from the battery to the elevator is resumed. In this way, the time during which power is supplied from the battery is limited to suppress battery depletion.
JP 2003-104643 A

  However, in an elevator remote monitoring system equipped with a battery as an auxiliary power source, power supply from the battery to the remote monitoring device and charging after the end of the power failure are repeated during a power failure. By repeatedly supplying power from the battery and charging the battery, the battery gradually deteriorates and the voltage after charging gradually decreases. For this reason, when the battery is used, a situation where the battery is exhausted in a short time, or a situation where the battery is already exhausted when the battery is desired to be used occurs.

  In order to prevent the occurrence of such a situation, it is necessary for a dedicated maintenance engineer to regularly check the voltage of the battery, and to replace the battery when the battery voltage is lower than the reference voltage value.

  The present invention has been made to solve such problems, and its purpose is to detect whether or not the battery voltage is appropriate without performing a battery voltage test by a dedicated maintenance staff. is there.

  A first feature according to an embodiment of the present invention is that in a remote monitoring system for an elevator, when the power supply from the main power supply is stopped, the voltage of a battery that supplies power to the elevator instead of the main power supply is measured. A voltage measurement unit that performs measurement, a transmission unit that transmits measurement data measured by the voltage measurement unit to an elevator monitoring center, and the measurement data that is provided in the elevator monitoring center and is transmitted and a preset reference voltage value. A determination unit that determines whether or not the voltage of the battery is appropriate by comparison, and a notification unit that is provided in the elevator monitoring center and notifies the determination result of the determination unit.

  According to the present invention, it is possible to detect in the elevator monitoring center whether or not the battery voltage is appropriate without performing a battery voltage test by a dedicated maintenance staff.

  Hereinafter, an elevator remote monitoring system according to an embodiment of the present invention will be described with reference to the drawings. In the elevator remote monitoring system, as shown in FIG. 1, an elevator machine room 1 is formed in an upper part of an elevator hoistway (not shown), and an elevator control device 2 and a remote monitoring device 3 are provided in the elevator machine room 1. And a hoist (not shown) are installed. The elevator control device 2 and the remote monitoring device 3 are connected via a transmission line 4. Further, the remote monitoring device 3 is connected to an elevator monitoring center 5 of an elevator management company via a network 6. As the network 6, the Internet, a telephone line, or the like is used.

  The elevator control device 2 controls raising / lowering and stopping of the elevator car 7, opening / closing of a car door, and the like. The elevator control device 2 receives an operation signal from an operation button of a landing operation panel 9 provided in the elevator hall 8 and an operation signal from an operation button of an in-car operation panel 10 provided in the elevator car 7. Then, a control signal corresponding to the input operation signal is output from the elevator control device 2 to a hoisting machine, a door opening / closing motor (not shown) or the like. By driving the hoisting machine, the elevator car 7 is raised and lowered. When the door opening / closing motor is driven, the door (not shown) of the elevator car 7 is opened and closed together with the door (not shown) of the elevator hall.

  The remote monitoring device 3 includes a receiving unit 11 that collects various data related to the operation status of the elevator, a transmission unit 12 that transmits the collected data to the elevator monitoring center 5 via the network 6, and a power supply unit 13. Yes. Among the data received by the receiver 11 and transmitted from the transmitter 12, the data transmitted from the elevator control device 2 via the transmission line 4 and the voltage of the battery 14 provided in the power supply unit 13 are included. The measured measurement data is included. The power supply unit 13 and the battery 14 will be described later.

  The elevator monitoring center 5 includes a database 15 that stores various data transmitted from the remote monitoring device 3 via the network 6 for each elevator, and a first notification unit that notifies the data stored in the database 15. A display 16 is provided. Further, the elevator monitoring center 5 determines whether or not the voltage of the battery 14 is appropriate by comparing the measurement data of the voltage of the battery 14 transmitted from the remote monitoring device 3 with a preset reference voltage value. And a storage unit 18 that stores a reference voltage value that ensures the normal operation of the battery 14 is provided. The reference voltage value is set to a plurality of values corresponding to the capacity of the battery 14.

  The case where the voltage of the battery 14 is appropriate is a case where the voltage of the battery 14 is higher than the reference voltage value, and the case where the voltage of the battery 14 is not appropriate is a case where the voltage of the battery 14 is lower than the reference voltage value. . The determination result in the determination unit 17 is stored in the database 15, and the stored determination result is notified on the display 16 which is a notification unit. This notification is performed automatically or by operating an operation button for display. When notification that the voltage of the battery 14 is not appropriate is given, the person in charge of the elevator monitoring center 5 checks the battery 14 to the dedicated maintenance staff of the corresponding elevator, and if necessary, an instruction to replace it. Is issued.

  FIG. 2 is a block diagram showing an internal structure of the power supply unit 13 that supplies power to the remote monitoring device 3 that is a part of the elevator. The power supply unit 13 includes a main power supply unit 20 and a battery 14 that is an auxiliary power supply. The main power supply unit 20 converts the voltage of the commercial power supply 19 that is the main power supply into a direct-current voltage (for example, DC5V) suitable for each electronic circuit. The battery 14 supplies power to the electronic circuit in place of the commercial power supply 19 when the power supply from the commercial power supply 19 is stopped, such as during a power failure of the commercial power supply 19.

  The battery 14 is connected in parallel to the main power supply unit 20, and an electromagnetic relay 21 and a charging resistor 22 are connected to the battery 14 in series. Further, a diode 23 is connected in parallel with the charging resistor 22. The electromagnetic relay 21 is turned off when there is no change in the data collected by the remote monitoring device 3 for a preset time after the power supply from the battery 14 is started, and is turned on otherwise. Has been.

  The voltage of the commercial power supply 19 is converted to about DC 7.2V by the main power supply unit 20. The output voltage of the main power supply unit 20 is, on the one hand, a voltage suitable for operating the electronic circuit via the DC / DC converter 24 (for example, DC 5V), which charges the battery 14 via the charging resistor 22. Is converted to When the elevator is operated by the commercial power source 19, the battery 14 is always charged.

  The main power supply unit 20 is provided with an electromagnetic relay 25 that is a main power supply stop unit that stops power supply from the commercial power supply 19 for maintenance and inspection of the battery 14. The electromagnetic relay 25 is turned off when a maintenance / inspection instruction signal for the battery 14 is input, and the power supply from the commercial power supply 19 is stopped when the electromagnetic relay 25 is turned off. When the electromagnetic relay 25 is turned off and power supply from the commercial power supply 19 is stopped, power is supplied from the battery 14 via the electromagnetic relay 21 and the diode 23. Further, the electromagnetic relay 25 is turned on after a preset time has elapsed since the power supply from the commercial power supply 19 is stopped after being turned off, and the power supply source is automatically restored from the battery 14 to the commercial power supply 19. It also functions as a recovery unit.

  Furthermore, the power supply unit 13 is provided with a voltage measurement unit 26 that measures the voltage of the battery 14 when power supply from the commercial power supply 19 is stopped. The voltage measuring unit 26 is operated by power supplied from the battery 14 when power is supplied from the battery 14. The measured data of the measured voltage of the battery 14 is transmitted from the transmission unit 12 to the elevator monitoring center 5 via the network 6. Whether or not the voltage measurement data transmitted to the elevator monitoring center 5 has reached the reference voltage value stored in the storage unit 18 is determined by the determination unit 17, and the determination result is as follows. It is stored in the database 15 corresponding to each elevator and displayed on the display 16.

  As shown in FIG. 3, the elevator landing 8 on each floor is provided with a display 28 as a second notification unit at the upper part of the three-way frame 27. When the electromagnetic relay 25 is turned off and the power supply from the commercial power supply 19 is stopped, the display 28 displays that the elevator battery 14 is undergoing maintenance and inspection. This display ends when the electromagnetic relay 25 is turned on and the power supply source is restored from the battery 14 to the commercial power supply 19.

  The measurement of the voltage of the battery 14 performed by stopping the power supply from the commercial power supply 19 by the main power supply stopping unit 25 is performed at a scheduled date and time. For example, it is performed on the day set every day of the week or the day of the month. Furthermore, it is performed during the day when there are few elevator users.

  The process of measuring the voltage of the battery 14 by the elevator remote monitoring system will be described based on the flowchart of FIG.

  First, it is determined whether or not there is an instruction for maintenance and inspection of the battery 14 from the elevator monitoring center 5 (S1). This maintenance / inspection instruction may be transmitted from the elevator monitoring center 5 as an instruction signal, or may be generated in the remote monitoring device 3 at a set date and time. When there is a maintenance / instruction instruction signal (YES in S1), an indication that the elevator battery 14 is undergoing maintenance / inspection is displayed on the display 28 of the elevator hall 8 (S2), and the electromagnetic relay 25 is turned off. Thus, the power supply from the commercial power supply 19 is stopped (S3). When power supply from the commercial power supply 19 is stopped, power supply from the battery 14 is started at the same time.

  After the power supply from the battery 14 is started, the voltage of the battery 14 is measured by the voltage measuring unit 26 (S4), and the measurement data is transmitted to the elevator monitoring center 5 (S5).

  Next, it is determined whether or not a preset time for maintenance inspection has elapsed (S6). If the preset time has elapsed (YES in S6), the electromagnetic relay 25 is turned on and the commercial power supply is turned on. The power supply from 19 is resumed (S7). When the power supply from the commercial power source 19 is resumed, the power supply from the battery 14 is terminated, and the battery 14 is charged with the power from the commercial power source 19. After the supply of power from the commercial power supply 19 is resumed, the display on the display 28 indicating that the maintenance inspection is being performed is finished (S8), and the series of controls is finished.

  FIG. 5 is a flowchart for explaining processing performed in the elevator monitoring center 5 when the voltage measurement data of the battery 14 is transmitted to the elevator monitoring center 5.

  First, it is determined whether or not the measurement data of the voltage of the battery 14 is transmitted (S11). When the voltage measurement data is transmitted (YES in S11), the transmitted measurement data is compared with the reference voltage value stored in the storage unit 18 to determine whether or not the voltage of the battery 14 is appropriate. Is determined by the determination unit 17 (S12).

  If it is determined that the voltage of the battery 14 is appropriate (YES in S12), the determination result is stored in the database 15 (S13), and the series of processes ends.

  On the other hand, when it is determined that the voltage of the battery 14 is not appropriate (NO in S12), the determination result is displayed on the display 16 (S14), and the determination result is stored in the database 15 (S13). Ends.

  In such a configuration, the remote monitoring system for the elevator normally operates with power supplied from the commercial power source 19 and operates with power supplied from the battery 14 during a power failure.

  When detecting whether or not the voltage of the battery 14 is appropriate, the electromagnetic relay 25 is turned off based on a maintenance / inspection instruction signal. When the electromagnetic relay 25 is turned off, the power supply from the commercial power source 19 is stopped and the power supply from the battery 14 is started. When power supply from the battery 14 is started, the voltage of the battery 14 is measured by the voltage measuring unit 26. The measurement data measured by the voltage measurement unit 26 is transmitted from the transmission unit 12 to the elevator monitoring center 5 via the network 6.

  Since the voltage measuring unit 26 is operated by the power supplied from the battery 14 and measures the voltage of the battery 14, it is not necessary to prepare a dedicated power source for operating the voltage measuring unit 26.

  The measurement data of the voltage of the battery 14 transmitted to the elevator monitoring center 5 is compared with a reference voltage value stored in the storage unit 18 to determine whether or not the voltage of the battery 14 is appropriate. When it is determined that the voltage of the battery 14 is not appropriate, the determination result is displayed on the display 16. For this reason, by looking at the display on the display 16, the person in charge of the elevator monitoring center 5 can know that the voltage of the battery 14 of a certain elevator is not appropriate. And an instruction to replace the battery 14 can be issued.

  Therefore, it is possible to reliably know in the elevator monitoring center 5 whether or not the voltage of the battery 14 is appropriate, even if the dedicated maintenance staff does not go to the place where the individual elevators are installed and does the voltage inspection of the battery 14. The necessary inspections and replacements can be performed quickly.

  When the maintenance check of the voltage of the battery 14 is being performed, the fact that the maintenance check is being performed is displayed on the display 28 of the elevator hall 8, and the elevator user can be notified that the maintenance check is being performed.

  Moreover, since the maintenance check of the voltage of the battery 14 is performed at a preset date and time, the maintenance check of the voltage of the battery 14 can be regularly and reliably performed.

  Furthermore, the occurrence of a situation in which the elevator cannot be used for the maintenance check can be suppressed by performing the maintenance check of the voltage of the battery 14 in the time zone when the elevator user is the least.

1 is a block diagram showing an elevator remote monitoring system according to an embodiment of the present invention. It is a block diagram of the power supply part of a remote monitoring apparatus. It is a schematic diagram which shows an elevator platform. It is a flowchart explaining the process of the voltage measurement of the battery by the remote monitoring system of an elevator. It is a flowchart explaining the process performed in an elevator monitoring center when the measurement data of the voltage of a battery are transmitted to an elevator monitoring center.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Elevator monitoring center 8 Elevator landing 12 Transmission part 14 Battery 16 Notification part 17 Determination part 19 Main power supply 25 Main power supply stop part, Recovery part 26 Voltage measurement part 28 2nd notification part

Claims (4)

A voltage measuring unit that measures a voltage of a battery that supplies power to an elevator instead of the main power supply when power supply from the main power supply is stopped;
A transmission unit that transmits measurement data measured by the voltage measurement unit to an elevator monitoring center;
A determination unit that is provided in the elevator monitoring center and determines whether the voltage of the battery is appropriate by comparing the transmitted measurement data with a preset reference voltage value;
An informing unit provided in the elevator monitoring center and informing a judgment result in the judging unit;
An elevator remote monitoring system comprising: A main power supply stop unit for stopping power supply from the main power supply according to a command from the elevator monitoring center;
A recovery unit that restores a power supply source from the battery to the main power source after a preset time has elapsed since the power supply from the main power source was stopped by the main power source stop unit;
With
The remote monitoring system for an elevator according to claim 1, wherein the voltage measuring unit is operated by electric power supplied from the battery and measures the voltage of the battery.   The elevator hall is provided with a second notification unit for notifying that the elevator is undergoing maintenance and inspection when power supply from the main power supply is stopped by the main power supply stop unit. Item 3. The elevator remote monitoring system according to Item 2.   2. The elevator remote monitoring system according to claim 1, wherein the measurement of the voltage of the battery performed by stopping the power supply from the main power supply by the main power supply stopping unit is performed at a preset date and time.

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