JP5674062B2 - Elevator control device and elevator control method - Google Patents

Description

  Embodiments described herein relate generally to an elevator control device and an elevator control method.

  Conventionally, an elevator is provided with a secondary battery for continuing operation during a power failure. By installing a secondary battery, the elevator can continue to operate even when a power failure occurs in the building and the power supply from the commercial power supply stops, improving the convenience of the user Can do.

Japanese Patent Laid-Open No. 11-217166

  However, since the secondary battery has a limit in the power capacity that can be supplied, the elevator has to be stopped when a power failure occurs for a long time and the capacity of the secondary battery decreases. Therefore, a technique for continuing the operation of the elevator for a longer time during a power failure has been desired.

  The present invention has been made in view of the above circumstances, and an elevator control device and an elevator control method capable of continuing a longer operation when an elevator is operated using a secondary battery during a power failure. The purpose is to provide.

According to the embodiment for achieving the above object, the elevator control device includes a storage unit, an available storage amount acquisition unit, and a control signal generation unit. A memory | storage part memorize | stores the driving speed information of the elevator car set for every some range by the some threshold value regarding the electrical storage amount which can be used for a secondary battery. The available storage amount acquisition unit acquires the available storage amount of the secondary battery at predetermined time intervals when a power failure occurs and the elevator continues operation during power failure due to power supply from the secondary battery. The control signal generation unit acquires operation speed information corresponding to the acquired usable storage amount from the storage unit, and generates a control signal for executing continuous operation during a power failure based on the acquired operation speed information.

1 is an overall view showing a configuration of an elevator using an elevator control device according to an embodiment. The block which shows the structure of the elevator using the elevator control apparatus by one Embodiment. The table | surface which shows an example of the information memorize | stored in the memory | storage part of the elevator control apparatus by one Embodiment. The flowchart which shows operation | movement of the elevator control apparatus by one Embodiment. The figure which shows the display information displayed on the car guidance apparatus of the elevator control apparatus by one Embodiment. The figure which shows the display information displayed on the hall guidance apparatus of the elevator control apparatus by one Embodiment.

<Configuration of elevator according to one embodiment>
The structure of the elevator using the elevator control apparatus by one Embodiment of this invention is demonstrated with reference to FIG.

  In the elevator 1 according to this embodiment, a hoisting machine 4 is installed in a machine room 3 above the hoistway 2, and a car 6 and a counterweight 7 are respectively attached to both ends of the main rope 5 spanned over the hoisting machine 4. It is suspended in a vine style.

  The hoisting machine 4 includes a main rope 41 over which the main rope 5 is routed, and an electric motor 42 that operates the main rope 41 and moves the car 6 up and down. The hanging position of the main rope 5 laid over the main rope 41 is adjusted by the baffle 8. The electric motor 42 has a function of performing a power running operation that converts supplied electric power into mechanical power, and a function of performing a regenerative operation that converts input mechanical power into electric power.

  A rechargeable storage battery is installed in the machine room 3 as a secondary battery 9 (auxiliary power supply), and power is supplied to each device in order to continuously operate the elevator 1 when a power failure occurs. As shown in FIG. 2, the secondary battery 9 includes an ammeter 91 that measures a current value of power discharged from the secondary battery 9 and a voltmeter 92 that measures a voltage value.

  In addition, the elevator control device 10 is installed in the machine room 3, and the operation of each device in the elevator 1 is controlled by electric power supplied from a commercial power supply 11 (main power supply) at normal times. Monitor.

  The passenger car 6 moves up and down in the hoistway 2 and enables a user to move between the landings of a plurality of floors (between the first floor landing 12-1 and the third floor landing 12-3 in FIG. 1). ing.

  In the car 6, the car operation panel 61 for the user to perform operations such as registering the destination floor of the car 6 and the user with alarm sound, text information, video information, audio information, etc. It has a car guide device 62 that outputs guidance information related to driving, a load detection device 63 that detects the amount of load in the car 6, an illumination device 64, an air conditioner 65, and a car door 66. The load capacity in the car 6 is detected based on the number of passengers.

  Each elevator hall 12-1 and 12-3 has hall operation panels 121-1 and 121-3 for operation by the user, alarm sound, text information, video information, and audio information for the user. For example, the platform guidance devices 122-1 and 122-3 that output guidance information related to driving and the platform doors 123-1 and 123-3 are provided.

  The detailed configuration of the control device 10 will be described with reference to the block diagram of FIG. The control device 10 includes an operation control unit 101, a drive control unit 102, and a secondary battery control unit 103.

  The operation control unit 101 includes a storage unit 1011, a calculation unit 1012, and an output unit 1013.

  The storage unit 1011 stores the driving speed information of the car 6 for each preset range related to the amount of usable power stored in the secondary battery 9.

  The calculation unit 1012 includes a usable power storage amount acquisition unit 1012A, a control signal generation unit 1012B, and a driveable predicted time calculation unit 1012C.

  When a power failure occurs and power supply from the secondary battery 9 is started, the usable storage amount acquisition unit 1012A acquires the current usable storage amount of the secondary battery 9 at predetermined time intervals.

  During normal operation, the control signal generator 1012B displays the operation contents on the in-car operation panel 61, the landing operation panels 121-1, 121-3, the loaded load detected by the load detecting device 63, and a preset normal Based on the driving speed information during driving, each device in the elevator 1 (the motor 42, the car operating panel 61, the car guide device 62, the load detecting device 63, the lighting device 64, the air conditioning device 65, the car door 66, the landing operation) Control signals for controlling the panels 121-1 and 121-3 and the landing doors 123-1 and 123-3) are generated and sent to the output unit 1013.

  In addition, when detecting the occurrence of a power failure, the control signal generation unit 1012B sends an instruction to the switching circuit 1031 to supply power from the secondary battery 9 into the elevator 1 in order to cause the elevator 1 to continue operation during a power failure. .

  In addition, when a power failure occurs and power supply from the secondary battery 9 is started, the control signal generation unit 1012B acquires the operation speed information corresponding to the acquired current usable storage amount from the storage unit 1011 and Each device in the elevator 1 is controlled based on the operation contents on the operation panel 61 and the landing operation panels 121-1 and 121-3, the loaded load amount detected by the load detection device 63, and the acquired operation speed information. Control signal is generated and sent to the output unit 1013. If the usable storage amount during power failure continuous operation has dropped below a predetermined value and the applicable range of usable storage amount in the power failure operation speed information has changed, the elevator will be accompanied by this change. Change the driving speed.

  The drivable predicted time calculation unit 1012C calculates a drivable predicted time at the time of a power failure based on the acquired usable power storage amount and driving speed information.

  The output unit 1013 outputs the control signal calculated by the calculation unit 1012 to each corresponding device (the electric motor 42, the car guide device 62, the landing guide devices 122-1, 122-3, the lighting device 64, the air conditioning device 65, the car door). 66, landing doors 123-1, 123-3, etc.).

  The drive control unit 102 includes a converter (pulse width modulation converter or rectifier) 102A that converts electric power supplied from the commercial power supply 11 from alternating current to direct current, and electric power that is once converted into direct current by the converter 1021 at an arbitrary current and frequency. And an inverter 1022 for converting electric power generated during the regenerative operation of the motor 42 from AC to DC.

  The secondary battery control unit 103 is configured to control each device (the control device 10, the motor 42, the in-car operation panel 61, the car guide device 62, the load detection device) from the secondary battery during the charging process to the secondary battery 9 and the continuous power failure operation. 63, the lighting device 64, the air conditioning device 65, the car door 66, the inverter 1022, the landing operation panels 121-1, 121-3, and the landing doors 123-1, 123-3).

<Elevator Operation According to One Embodiment>
In this embodiment, as shown in FIG. 3, the storage unit 1011 of the operation control unit 101 of the control device 10 of the elevator 1 has an operation speed of the car 6 for each available storage amount at the time of a power failure of the secondary battery 9. Memorize information. This information is set in a stepwise manner so that the smaller the usable power storage amount of the secondary battery 9 is, the smaller the value is. In the example of FIG. In the case of “over 70% of the maximum capacity and 90% or less”, “operating at 2/3 of the normal operation speed” and the amount of usable storage is “over 50% of the maximum capacity of the secondary battery 9 and 70% or less” In the case of “operating at half the speed of normal operation”, and in the case where the available storage amount is “over 10% of the maximum capacity of the secondary battery 9 and 50% or less”, “1/3 of the normal operation” It is shown that “stop” is performed when the operation amount is “10% or less of the maximum capacity of the secondary battery 9”.

  The operation of the elevator 1 will be described with reference to the flowchart of FIG.

  First, during normal operation, that is, when electric power is supplied from the commercial power supply 11, operation control of the control device 10 is performed based on the operation of the landing operation panels 121-1 and 121-3 or the in-car operation panel 61 by the user. The operation of the elevator 1 is controlled by the unit 101. Specifically, the elevator in the control signal generation unit 1012B of the calculation unit 1012 is based on the user's operation content, the loaded load amount detected by the load detection device 63, and the preset operation speed information during normal operation. 1 (electric motor 42, in-car operation panel 61, car guide device 62, load detection device 63, lighting device 64, air conditioner 65, car door 66, landing operation panels 121-1, 121-3, landing door 123-1, 123-3, etc.) is generated and output from the output unit 1013 to the corresponding device. The driving speed of the car 6 during normal driving is, for example, 60 m / min.

  The control signals for controlling each device include raising / lowering of the car 6 driven by the electric motor 42, lighting / extinguishing of the lighting device 64, ON / OFF of the air conditioning device 65, adjustment of the set temperature, opening / closing of the car door 66, landing It is a signal for controlling opening and closing of the doors 123-1 and 123-3.

  Thus, by controlling each apparatus, the user can move to a desired floor using the elevator 1.

  During normal operation, the power supplied from the commercial power supply 11 is converted from alternating current to direct current by the converter 1021 and stored in the secondary battery 9. Furthermore, the electric power generated by the motor 42 during the regenerative operation of the elevator 1 is converted from alternating current to direct current by the inverter 1022, and stored in the secondary battery 9 (S1).

  Next, when a power failure occurs in the building (“YES” in S2), the calculation unit 1012 of the operation control unit 101 detects the power failure, and the switching circuit 1031 of the secondary battery control unit 103 causes each device ( Control device 10, motor 42, in-car operation panel 61, car guide device 62, load detection device 63, lighting device 64, air conditioner 65, car door 66, inverter 1022, landing operation panels 121-1, 121-3, landing It is switched so that electric power is supplied to the doors 123-1 and 123-3) (S3).

  When switching is performed so that power is supplied from the secondary battery 9, the continuous operation at the time of power failure is started, the usable power storage amount at the time of continuous power failure is calculated in the usable power storage amount acquisition unit 1012A, and the predicted operation possible time In the calculation unit 1012C, the estimated driving time is calculated (S4).

  A detailed process when the amount of usable power storage and the estimated operation time during a power failure continuous operation are calculated will be described.

  First, regarding the secondary battery 9, the current storage amount of the secondary battery 9 is acquired based on the current value measured by the ammeter 91 and the voltage value measured by the voltmeter 92. The current storage amount is a usable amount of storage that is effective for supplying power within a preset range of a relative ratio to the maximum capacity of the secondary battery 9 (for example, 10 to 90%).

  Next, driving speed information corresponding to the acquired current available storage amount is acquired from the storage unit 1011 in the control signal generation unit 1012B.

  Next, based on the available electricity storage amount acquired by the available electricity storage amount acquisition unit 1012A and the operation speed information acquired by the control signal generation unit 1012B, the estimated operation possible time of the elevator 1 during the continuous power failure operation is calculated. The It is also possible to calculate the load (actual operating speed) of the electric motor 42 based on the amount of power supplied to the electric motor 42, the output signal, etc., and calculate the drivable predicted time considering this.

  In these calculation processes, the relationship between the storage amount of the secondary battery 9, the load capacity of the car 6, the operation speed of the car 6, the usable power storage amount, and the predicted operation time is determined by raising and lowering the car 6. This is executed based on mapping rule information and a mathematical model set in advance based on the required power amount. These mapping rule information and mathematical formula model are stored in advance in the storage unit 1011 of the operation control unit 101.

  The calculation of the usable power storage amount is executed at a predetermined time interval, and the calculation of the drivable predicted time is executed at a predetermined time interval or when the driving speed information is changed. The usable amount of stored electricity and the estimated operation time are usually gradually decreased as the elapsed time from the start of the power failure continuous operation is increased.

  Further, by executing the continuous operation at the time of a power failure, based on the operation contents of the user, the loaded load amount detected by the load detection device 63, and the preset operation speed information during normal operation, In the control signal generation unit 1012B, each device in the elevator 1 (the electric motor 42, the in-car operation panel 61, the car guide device 62, the load detection device 63, the lighting device 64, the air conditioning device 65, the car door 66, the landing operation panel 121-1. , 121-3, landing doors 123-1, 123-3, etc.) are generated and output from the output unit 1013 to the corresponding device.

  Information on the calculated usable storage amount, estimated driving time, and current driving speed is transmitted to the car guide device 62 and the landing guide devices 122-1, 122-3 via the output unit 1013 and displayed. (S5).

  FIG. 5 is a display example showing a state in which information on the available power storage amount, the estimated driving time, and the current driving speed are displayed on the display unit 621 of the car guidance device 62. In addition to the display unit 621, the car guide device 62 is provided with a destination opening registration button group 622, a door opening button 623, a door closing button 624, and the like.

  FIG. 6 is a table showing a state in which usable storage amount, estimated driving time, and current driving speed information are displayed on the display units 1221-1 and 1221-3 of the hall guidance devices 122-1 and 122-3. It is an example. In addition to the display units 1221-1 and 1221-3, the platform guidance devices 122-1 and 122-3 include an upward car call button 1222-1 and 1222-3, and a downward car call button 1223-1 and 1223-. 3 etc. are installed.

  Further, in the output unit 1013, when it is detected that an emergency has occurred during continuous operation during a power failure (for example, when a fire is detected in a building), the car guide device 62 The display unit 621, the display unit 1221-1 of the hall guide device 122-1, and the display unit 1221-3 of the hall guide device 122-3 are allowed to display information for notifying that an emergency has occurred. You may do it.

  Returning to the flowchart of FIG. 4, it is determined whether or not the calculated usable storage amount has decreased below a predetermined value (S <b> 6). Whether or not it falls below a predetermined value does not exceed the state in which the corresponding range of “usable amount of power storage during power failure” exceeds a different threshold (for example, 70%, 50%, 10%) in the table of FIG. Judgment is made based on whether or not the state has changed.

  Here, when it is determined that the value is lower than the predetermined value (“YES” in S6), the driving speed of the power running operation of the car 6 is changed according to the information in the table (S7). For example, when the amount of stored electricity of the secondary battery 9 changes from a state exceeding 70% to a state below 70%, the operation speed is changed from 40 m / min to 30 m / min. Furthermore, when the amount of usable power stored in the secondary battery 9 decreases to a state of 50% or less of the maximum capacity, the driving speed of the power running operation of the car 6 is changed from 30 m / min to 20 m / min. Along with the change in the operation speed, the control signal output from the output unit 1013 to the electric motor 42 is also changed.

  The driving speed is changed after the car 6 has landed on any floor at the most recent time after it is determined in step S6 that the driving speed has decreased below the predetermined value.

  At this time, information for notifying the change of the driving speed is displayed on the car guide device 62 and the landing guide devices 122-1 and 122-3, and is output by voice.

  When the operation speed is changed due to a decrease in the amount of available power storage, the estimated operation possible time is again calculated along with this, and a new value is calculated by the calculation unit 1012. And these new usable electric storage amount, driving | operation estimated time, and driving speed are output from the output part 1013, and the display content displayed on the car guidance apparatus 62 and the landing guidance apparatuses 122-1, 122-3 is updated. (S8).

  In this way, even during continuous operation during a power failure, the electric power generated by the motor 42 during the regenerative operation of the elevator 1 is converted from alternating current to direct current by the inverter 1022 and stored in the secondary battery.

  Then, it is determined whether or not the commercial power supply 11 has been restored (S9). When the commercial power supply 11 has been restored ("YES" in S9), the process returns to step S1 to perform normal operation.

  When returning to the normal operation, the operation speed of the power running operation is returned to 60 m / min. The operating speed is changed after the car 6 has landed on any floor at the most recent time after it is determined in step S9 that the commercial power supply has been restored.

  At this time, information for notifying the change of the driving speed is displayed on the car guide device 62 and the landing guide devices 122-1 and 122-3, and is output by voice.

  Information for notifying the change of the driving speed is displayed on the car guide device 62 and the landing guide devices 122-1 and 122-3 and is output by voice.

  When the commercial power supply 11 is not restored (“NO” in S9), it is determined whether or not the capacity of the secondary battery 9 has reached the discharge limit (for example, 10% of the maximum charged amount) (S10). ).

  When it is determined that the discharge limit has been reached (“YES” in S10), the operation control unit 101 controls to stop the car 6 on the floor that has recently landed (S11). Here, information for notifying that the car 11 is to be stopped is displayed on the car guide device 62 and the landing guide devices 122-1 and 122-3, and is output by voice.

  When it is determined that the discharge limit has not been reached (“NO” in S10), the process returns to step S4 and the continuous operation during a power failure is performed. During low-speed operation due to continuous operation during a power failure, every predetermined time interval (for example, every 10 minutes), or when the car 6 reaches any floor, the in-car operation panel 61 or the landing operation panel 121- When an action related to the operation of the elevator 1 occurs, such as when 1, 121-3 is operated, information for notifying that the vehicle is operating at a low speed is the car guide device 62 and the landing guide device 122-1. , 122-3, and output by voice.

  According to the above-described embodiment, when the continuous operation at the time of power failure is performed, the operation speed of the power running operation becomes relatively lower as compared with the normal operation as the remaining capacity of the secondary battery decreases. Thus, by changing in stages, power consumption can be efficiently suppressed, and continuous operation during a power failure can be performed for a longer time.

  In addition, during continuous operation in the event of a power failure, by displaying the amount of available power storage, the estimated driving time, and the driving speed in the car or on the platform guidance device, the user is informed of the operating status at the time of the power failure. This can raise energy conservation awareness and reduce power consumption. Moreover, when the capacity of the secondary battery falls below a predetermined value, it is possible to avoid a situation where the user suddenly stops unexpectedly, and the user can use the elevator with confidence by knowing the operation duration time. be able to.

  In addition, when an emergency situation occurs during continuous operation during a power failure, information necessary to notify the emergency situation is displayed in the car or on the platform guidance device, thereby ensuring the necessary information for the user while reducing power consumption. Can be provided.

  In the above-described embodiment, a description will be given of a case where the display and update of the available power storage amount, the estimated driving time, and the driving speed for the car guidance device and the landing guidance device are continuously performed after the continuous operation at the time of power failure starts. However, when the amount of usable power storage or the estimated driving time is lower than a preset threshold (for example, when the estimated driving time is less than 20% of the maximum driving time by the secondary battery, It may be displayed only when it becomes 10 minutes or less. By displaying in this way, it is possible to further reduce power consumption during a power failure.

  In the above embodiment, when a plurality of elevators are installed in a building and one secondary battery is installed for the plurality of elevators, in the elevator car and the hall of all the elevators, Information for notifying the change is output. At that time, it may be output to all floor landings, or may be output only to the reference floor corresponding to the entrance or the like in the building and the floor landing where a car call has occurred.

  Moreover, when the secondary battery is installed in each of the plurality of elevators, information for notifying the change of the driving speed is output to the corresponding car and the corresponding landing.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Elevator 2 ... Hoistway 3 ... Machine room 4 ... Hoisting machine 5 ... Main rope 8 ... Baffle 9 ... Secondary battery 10 ... Control apparatus 11 ... Commercial power supply 12-1, 12-3 ... Elevator landing 14 ... Electric motor 41 ... main rope 42 ... electric motor 61 ... in-car operation panel 62 ... car guide device 63 ... load detection device 64 ... lighting equipment 65 ... air conditioning equipment 66 ... car door 91 ... ammeter 92 ... voltmeter 101 ... operation control unit 102 ... Drive control unit 103 ... secondary battery control unit 121-1, 121-3 ... landing operation panel 122-1, 122-3 ... landing guide device 123-1, 123-3 ... landing door 621 ... display unit 622 ... destination opening Registration button group 623 ... Door open button 624 ... Door close button 1011 ... Storage unit 1012 ... Calculation unit 1012A ... Usable storage amount acquisition unit 1012B ... Control signal generation unit 1012C ... Operable Time measurement calculation unit 1013 ... output unit 1021 ... converter 1022 ... inverter 1031 ... switching circuit 1221-1, 1221-3 ... display unit 1222-1, 1222-3 ... upward car call button 1223-1, 1223-3 ... down Directional car call button

Claims (5)

In an elevator control device for controlling an elevator equipped with a secondary battery,
A storage unit that stores driving speed information of the elevator car set for each of a plurality of ranges based on a plurality of thresholds with respect to a usable power storage amount of the secondary battery;
When a power failure occurs, a switching unit that switches to supply power from the secondary battery to the elevator in order to cause the elevator to perform continuous operation during a power failure,
When power supply from the secondary battery is started, an available storage amount acquisition unit that acquires the usable storage amount of the secondary battery at predetermined time intervals;
A control signal generation unit that acquires operation speed information corresponding to the acquired usable storage amount from the storage unit, and generates a control signal for causing the power failure continuous operation to be executed based on the acquired operation speed information; ,
An elevator control device comprising: Connected to the car output device installed in the elevator car and the hall output device installed in the hall,
Based on the obtained usable storage amount and the driving speed information, a predictable driving time calculation unit that calculates a driving possible prediction time at the time of a power failure; and
The output unit for outputting the acquired usable power storage amount and driving speed information and the calculated predicted drivable time from the car output device and the landing output device, further comprising: The elevator control device described. 3. The elevator according to claim 1, wherein the operation speed information stored in the storage unit is set in a stepwise manner so that the value becomes smaller as the usable power storage amount of the secondary battery is smaller. Control device. The elevator control device according to any one of claims 1 to 3, wherein the control signal generation unit generates a control signal for power running based on the acquired driving speed information. An elevator control device for controlling an elevator equipped with a secondary battery,
With respect to the usable amount of electricity stored in the secondary battery, the driving speed information of the elevator car set for each of a plurality of ranges based on a plurality of threshold values is stored,
When a power failure occurs, the secondary battery is switched to supply power to the elevator in order to cause the elevator to perform continuous operation during a power failure.
When power supply from the secondary battery is started, a usable power storage amount of the secondary battery is acquired at predetermined time intervals,
The operation speed information corresponding to the acquired available storage amount is acquired from the stored information, and a control signal for executing the continuous operation at the time of power failure is generated based on the acquired operation speed information. Elevator control method.

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