JP2000327255A - Escalator control device having footstep for wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect abnormality of a position detecting device for a foot step for a wheelchair without decreasing an operation rate of an escalator, by monitoring the abnormality of the position detecting device with an abnormality monitoring means when an operation mode is a normal operation mode. SOLUTION: An operation control means 29 of a control portion 27 performs a normal operation of an escalator, when an operation mode changeover switch 10a or 10b selects a normal operation mode. When a wheelchair operation mode is selected, a wheelchair operation is performed based on output signals from various limit switches 15a-19b, a getting-into confirming button 11, a getting-off confirming button 12 and the like. During an operation in the normal operation mode, an operation signal is sent to an inverter device 26 to control a three-phase induction motor 5, and an abnormality monitoring means 30 monitors abnormality of the various limit switches 15a-19b used in the wheelchair operation mode. When at least one of these switches is determined to be abnormal, changeover to the wheelchair operation mode is prohibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair-equipped escalator control device for performing wheelchair operation by forming a wheelchair-mounted step by making a wheelchair step out of each step of an escalator the same plane as an adjacent step.

[0002]

2. Description of the Related Art Recently, an escalator with a step for a wheelchair, which enables a wheelchair user to get on while using the wheelchair, is installed in a station building or the like. Such an escalator with steps for wheelchairs reduces the psychological burden on wheelchair users,
In consideration of the improvement of the driving efficiency and the improvement of the service for general users, the vehicle is usually operated normally. When a wheelchair user uses the escalator, the normal operation is switched to the wheelchair operation, and after the use of the wheelchair, the operation returns to the normal operation.

FIG. 4 is a configuration diagram of such an escalator with steps for a wheelchair. The escalator 1 connects a plurality of steps 2 endlessly, and is arranged to be inclined between a lower floor entrance 3a and an upper floor entrance 3b. Each step 2 is driven by a three-phase induction motor 5 along the truss 4 to operate the escalator 1.

[0004] A biasing device 6a is provided at the entrance 3a on the lower floor.
Is similarly provided at the entrance 3b on the upper floor.
Is provided. These urging devices 6a and 6b have a function of making the upper surfaces of two or more steps 2 coplanar in the wheelchair driving mode, transforming them into wheelchair-mounted steps, and returning the steps 2 in the normal driving mode. I have. here,
Each step transformed for a wheelchair is hereinafter referred to as a wheelchair step 7. In FIG. 4, three wheelchair steps 7a, 7
7B and 7C are provided.

The lower floor entrance 3a and the upper floor entrance 3
On the b side, clerk call buttons 9a and 9b for calling the clerk 8, driving mode changeover switches 10a and 10b provided on the balustrade of the escalator 1 for switching between normal driving and wheelchair driving, respectively, Check-in buttons 11a and 11 that are operated when boarding
b, the down confirmation buttons 12a and 12b operated when the wheelchair user gets off the wheelchair step 7, the wheelchair operation stop buttons 13a and 13b for stopping the wheelchair operation, and the restart button 14a for restarting the wheelchair operation , 14b are provided. These buttons 11 to 14 are enabled when the wheelchair driving mode is selected by the driving mode switch 10.

The escalator 1 is provided with a plurality of position detecting devices for detecting the position of the wheelchair step 7 among the steps 2 that go around. This position detecting device is constituted by a limit switch. That is, the deceleration start limit switches 15a and 15b are provided at positions where deceleration is started just before the wheelchair user gets off, and the riding overrun limit switches 16a and 16b are used to prevent overrun when the wheelchair user gets on. The lowering deceleration limit switches 17a and 17b are provided at the detection position, and are provided at the deceleration position when the wheelchair user gets off. The overrun limit switches 18a and 18b are provided at positions for detecting overrun when the wheelchair user gets off, and the deceleration limit switches 19a and 19b are provided.
Is provided at a deceleration position when a wheelchair user gets on the vehicle.

The limit switches 15 to 19 are position detecting devices for detecting the positions of the wheelchair steps 7a, 7b, 7c. The limit switches 15 to 19 are operated by locking projecting pieces provided on the wheelchair steps 7a, 7b, 7c. It is something to do.

In the wheelchair driving mode, the button 1
Speakers 20a and 20b are provided for outputting announcements for guiding an operation to be performed by the attendant 8 in accordance with the operations of the limit switches 15 to 19 and the operations of the limit switches 1 to 14.

Next, the operation of the escalator having such a configuration will be described with reference to an operation time chart shown in FIG. When switching the operation mode from the normal operation mode to the wheelchair operation mode, the operation mode changeover switch 10 is operated after confirming that the transportation of general passengers has been completely completed. When the operation mode changeover switch 10 is operated,
The escalator 1 starts driving in the wheelchair driving mode.

When the wheelchair driving mode is started, the operation of the ride-in deceleration limit switch 19 starts the wheelchair driving. Now, it is assumed that the wheelchair step 7a approaches the entrance 3a on the lower floor, and the deceleration limit switch 19a operates. Then, the escalator 1 decelerates and performs low-speed operation, and outputs a guide announcement from the speakers 20a and 20b. For example, a message such as "Please put your wheelchair on the dedicated step" is displayed so that the attendant 8 can understand the operation to be performed next.

At the timing when the wheelchair Q gets on the escalator 1, a message prompting operation of the boarding confirmation button 11a for recognizing completion of the boarding operation is output. According to this message, when the ride is safely completed, the ride confirmation button 11a is operated. By this operation,
The escalator 1 is accelerated and operated at a specified speed. At this time, a warning message such as "the speed will be faster" is output.

If the overrun occurs when the wheelchair Q enters, the escalator 1 is stopped to operate the overrun limit switch 16a for safety. When the ride confirmation button 11a is operated when the wheelchair Q is at an appropriate position, the escalator 1 accelerates and starts driving at a specified speed, and a message prompting attention such as "speed is increased" is displayed. Output.

When the step 7a for the wheelchair reaches the position of the deceleration start limit switch 15b on the entrance 3b on the upper floor by this operation, the deceleration start switch 15b operates and the escalator 1 performs the deceleration operation again and this deceleration. Outputs a message calling attention to driving.

When the escalator 1 decelerates and descends and the deceleration limit switch 17b operates, a low-speed operation state is set. A message prompting the user to get off the wheelchair step 7a in this low-speed driving state is output. When the wheelchair Q gets off the escalator 1, the getting-off confirmation button 12 is operated for wheelchair getting-off confirmation. Thereby, the escalator 1 returns to the normal operation mode together with the message for returning to the normal operation mode, and operates at the specified speed in the normal operation.

Here, when an overrun occurs when the wheelchair Q is dismounted, the descending overrun limit switch 1
8b operates and stops the escalator 1 for safety. Then, when the drop confirmation button 12b is operated when the wheelchair Q is at an appropriate position, the escalator 1 returns to the normal operation mode along with a message for returning to the normal operation mode, and operates at the specified speed in the normal operation. .

As described above, in the conventional escalator with a step for a wheelchair, when a disabled person using the wheelchair Q gets on or off, or when the step 7 for a wheelchair performs a deforming operation for mounting the wheelchair, the limit as the position detecting device is used. Switch 15
In steps 19 to 19, the position of the wheelchair step 7 is detected, and the escalator is operated at low speed or stopped.

If the position detecting device fails, the escalator cannot be decelerated or stopped at a low speed in the wheelchair driving mode. Had been stopped.

[0018]

However, when the escalator 1 is stopped, not only the use of the wheelchair user is stopped, but also the use of the escalator 1 by ordinary users becomes impossible. Also, without prohibiting the use of escalator 1,
If the failure of the position detecting device is found after the wheelchair steps are deformed, it is necessary to temporarily return the wheelchair-mounted steps to the normal state of the steps 2. For this reason, the operation rate of the escalator has been reduced.

An object of the present invention is to provide a wheelchair step-equipped escalator control device capable of detecting a failure of a wheelchair step position detecting device without lowering the operation rate of the escalator.

[0020]

An escalator with a step for a wheelchair according to the first aspect of the present invention is provided with an escalator in which a plurality of steps are connected endlessly and arranged in an inclined manner between the entrances on the upper and lower floors. In the wheelchair driving mode, in the wheelchair-equipped escalator control device that performs a wheelchair operation by forming a wheelchair-mounted step by making the wheelchair step of the steps the same plane as an adjacent step, of the orbiting steps, A plurality of position detecting devices for detecting the position of the wheelchair steps; and a driving control means for performing normal driving when in a normal driving mode and performing wheelchair driving based on input information of the position detecting device when in a wheelchair driving mode. And abnormality monitoring means for monitoring an abnormality of the position detecting device in a normal operation mode.

In the present invention, when the operation mode of the operation control means is the normal operation mode, the abnormality of the position detecting device is monitored by the abnormality monitoring means.

According to a second aspect of the present invention, in the escalator with a step for a wheelchair according to the first aspect of the present invention, the abnormality monitoring means is arranged such that when the input state of the position detecting device continues for a predetermined time or more, When the state continues for a predetermined time or longer, it is determined that the position detecting device is abnormal.

In the present invention, when the input state of the position detecting device has continued for a predetermined time or when the input state has not been continued for a predetermined time or more, it is determined that the position detecting device is abnormal.

According to a third aspect of the present invention, in the escalator with a step for a wheelchair according to the first aspect of the present invention, the abnormality monitoring means is provided when the input order of the plurality of position detecting devices is not the order of their arrangement. It is characterized in that it is determined to be abnormal.

In the present invention, when the input order of the position detecting device is not the arrangement order, the position detecting device is determined to be abnormal.

According to a fourth aspect of the present invention, in the escalator with a step for a wheelchair according to the first aspect of the present invention, the abnormality monitoring means measures a distance between each of the plurality of position detecting devices. Is determined to be abnormal when the arrangement interval differs from the arrangement interval.

In the present invention, the distance between the position detecting devices is measured, and when the distance different from the arrangement interval is measured, it is determined that the position detecting device is abnormal.

According to a fifth aspect of the present invention, in the escalator control device with a step for a wheelchair according to any one of the first to fourth aspects, the abnormality monitoring means detects an abnormality of the position detecting device. In some cases, switching from the normal driving mode to the wheelchair driving mode is prohibited.

According to the present invention, when the abnormality of the position detecting device is detected, switching from the normal driving mode to the wheelchair driving mode is prohibited. The invention according to any one of claims 5 to 5, wherein, when the abnormality monitoring means detects an abnormality of the position detecting device, the abnormality monitoring means reports the abnormality to the outside.

According to the present invention, when an abnormality of the position detecting device is detected, the fact is notified to the outside.

[0031]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram of an escalator control device with a step for a wheelchair according to an embodiment of the present invention.

As shown in FIG. 1, the three-phase AC power supply 21 is input to a converter 23 of an escalator control device 22 with a step for wheelchairs, and is converted into DC by the converter 23. The DC power converted to DC by the converter device 23 is smoothed by the smoothing capacitor 24 and
5 is output. Further, an inverter device 26 is connected to the DC bus 25, and the inverter device 26 converts the DC power of the DC bus 25 into AC power of a variable frequency and supplies it to the three-phase induction motor 5 to drive the escalator 1. Control. Thus, the inverter device 26 enables the variable-speed operation of the three-phase induction motor 5 when the escalator 1 is switched to the wheelchair operation mode or the normal operation mode.

Here, during the power running operation of the escalator 1, the converter device 23 converts the three-phase power of the three-phase AC power supply 21 to DC and supplies it to the three-phase induction motor 5 via the inverter device 26. During the regenerative operation, the DC power obtained through the inverter device 26 is regenerated to the three-phase AC power supply 21 by the converter device 23. Converter device 23 and inverter device 26
Is composed of a self-extinguishing main circuit element.
It is composed of TR and IGBT.

The converter device 23 and the inverter device 26
Is controlled by the control unit 27. The control unit 27 has an operation mode switch 1 via an input interface 28.
0a and 10b, an operation mode switching signal Si, a button input signal Bj from the boarding confirmation button 11, the getting off button 12, and the like, a position detection device (deceleration start limit switch 1
5, a limit switch detection signal Lk from the boarding deceleration limit switch 19) is input. The control unit 27 controls the operation in the normal operation mode or the wheelchair operation mode based on these input signals, and outputs a control command and a monitoring command via the output interface 31.

The control section 27 is composed of, for example, a microcomputer, and has an operation control means 29 and an abnormality monitoring means 30. The operation control means 29 performs normal operation when the normal operation mode is selected by the operation mode changeover switch 10, and operates the various limit switches 15 to 19 (position detecting devices) when the wheelchair operation mode is selected. The wheelchair is driven based on the limit switch detection signal Lk and the button input signal Bj from the boarding confirmation button 11, the getting off button 12, and the like. That is, in the normal operation mode, the operation signal in the normal operation mode is sent to the inverter device 26 to control the three-phase induction motor 5,
In the wheelchair driving mode, a driving signal in the wheelchair driving mode is sent to the inverter device 26 to variably control the three-phase induction motor 5.

The abnormality monitoring means 30 monitors an abnormality of a plurality of position detecting devices (deceleration start limit switch 15 to riding deceleration limit switch 19) used in the wheelchair operation mode in the normal operation mode. Is what you do.

If the abnormality monitoring means 30 determines that any one of the plurality of position detection devices (deceleration start limit switch 15 to boarding deceleration limit switch 19) is abnormal, it switches to the wheelchair driving mode. Ban. That is, it ignores the wheelchair driving mode signal from the driving mode changeover switch 10 and prohibits switching to the wheelchair driving mode. The output interface 31
Notify the abnormality to the outside via. For example, the display units 32a and 32b are attached to the panel of the escalator 1 for display. As the display 32, for example, an LED or the like is used.

Next, a method of judging an abnormality of the position detecting device (deceleration start limit switch 15 to riding deceleration limit switch 19) in the abnormality monitoring means 30 will be described. The limit switch is activated by a projection attached to the wheelchair step 7. That is, when the wheelchair step 7 passes above the limit switch, it is activated.
Therefore, the wheelchair step 7 is in an operating state within a predetermined time while the wheelchair step 7 is passing, and becomes inactive when the wheelchair step 7 has passed. From this, it is an abnormal state that the limit switch maintains the operation state for the passage time of the wheelchair steps 7 or more, and when the input state of the position detection device (limit switch) continues for the predetermined time or more, The position detecting device determines that the position is abnormal.

During normal operation, each step goes around within a predetermined time. From this, the wheelchair steps 7
When the position switch (limit switch) has been inactive for more than a predetermined period of time, the limit switch is abnormal. Is determined. In other words, if the operation signal from the limit switch has not been input for a predetermined time or longer, it is determined that the position detection device (limit switch) is abnormal.

A plurality of position detecting devices (deceleration start limit switch 15 to riding deceleration limit switch 1)
Since the intervals of the arrangement positions of 9) are arranged so as to keep a predetermined interval in advance, an abnormality is determined by measuring each distance between the limit switches 15 to 19. The respective distances between the limit switches 15 to 19 are measured, for example, by counting pulse signals from a pulsi generator that generates pulses in synchronization with the rotation of the three-phase induction motor 5 that drives the steps. Then, the value is compared with a predetermined value (distance), and when it is within the allowable range, it is determined to be normal, and when it deviates from the allowable range, it is determined to be abnormal.

A plurality of position detecting devices (deceleration start limit switch 15 to riding deceleration limit switch 1)
In 9), since the arrangement order is determined in advance, it is monitored whether or not the operation states of the limit switches are in the order of the arrangement. If not, the limit switches that did not operate are regarded as abnormal. It is also possible to make a determination.

FIG. 2 shows a plurality of position detecting devices (deceleration start limit switch 15 to riding deceleration limit switch 1).
9) A predetermined value (numbers 1 to 1) in order of arrangement to identify
0), and this data is stored in advance in the abnormality monitoring means 30 as a table.

Then, the abnormality monitoring means 30 performs the processing shown in FIG. 3 to determine the abnormality of the plurality of position detecting devices. First, when the operation state of the limit switch is input (S
1) The value for the limit switch is input from the data table of FIG. 2, and the value is stored as X _NEW (S2). Then, it is determined whether X _NEW is 1 or 10 (S3). That is, it is determined whether or not it is a limit switch provided at the end of the entrance 3a, 3b.

In the case of a limit switch provided at the end of the entrance 3a, 3b, the entrance 3 on the lower floor is used.
It is determined whether the switch is a limit switch provided at the entrance 3 of the entrance 3a or the entrance 3b on the upper floor (S4).
In the case of a limit switch (having a value of 1) provided at the lower entrance 3a, the latest X _NEW value is "1, 2, 1".
0 ”is determined (S5).

That is, it is determined whether or not the limit switch is in a normal state. This means that a limit switch with a value of 1 holds the current state of “1” as the next state or changes its state to “2” for an up escalator and “10” for a down escalator field. This is because it is a normal state. Therefore, the latest X
_If the value of _NEW is any of "1, 2, 10",
It is determined that the limit switch is normal (S
6). On the other hand, if not, it is determined that the limit switch is abnormal (S7).

On the other hand, if it is determined in step S4 that the switch is a limit switch (having a value of 10) provided at the entrance 3b on the upper floor, the latest X _NEW value is either "1, 9, 10". It is determined whether there is (S8).

That is, it is determined whether or not the limit switch is in a normal state. This means that the limit switch having a value of 10 holds the current state of “10” as the next state, or changes its state to “1” for an up escalator and “9” for a down escalator field. This is because it is a normal state. Therefore, the latest X _{NE W}
Is any of "1, 9, 10", it is determined that the limit switch is normal (S6). On the other hand, if not, it is determined that the limit switch is abnormal (S7).

In step S3, the entrance 3
If it is determined that the switch is not a limit switch provided at the end of a or 3b, X _NEW is compared with the immediately preceding X _OLD, and when | X _NEW −X _OLD | ≦ 1, it is normal. Is determined (S9). That is, when the value of the limit switch is continuous, it is determined that the value is normal.

Then, in step S9, the value of X _NEW is stored as X _OLD (S10), and the process returns to step S1.

As described above, with respect to the plurality of position detection devices (deceleration start limit switch 15 to boarding deceleration limit switch 19), it is monitored whether the operation states of the limit switches are in the order of arrangement. Otherwise, it is determined that the limit switch is abnormal.

[0051]

As described above, according to the present invention, the abnormality of the position detecting device for detecting the position of the wheelchair step is detected during driving in the normal mode. The vehicle will not be driven in the wheelchair driving mode.

Since the abnormality is reported to the outside, normal operation can be continued without switching to the wheelchair driving mode and causing a failure. Therefore, the operation rate of the escalator does not decrease.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an escalator with a step for a wheelchair according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a data table showing an arrangement order of position detection devices in the escalator with a step for a wheelchair according to the embodiment of the present invention.

FIG. 3 is a flowchart showing an example of abnormality detection of a position detection device in the wheelchair-equipped escalator control device according to the embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional escalator with steps for a wheelchair.

FIG. 5 is a driving operation time chart of the escalator with steps for a wheelchair of FIG. 4;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 escalator 2 steps 3 entrance 4 truss 5 three-phase induction motor 6 biasing device 7 wheelchair steps 8 clerk 9 clerk call button 10 operation mode switching switch 11 boarding confirmation button 12 exit confirmation button 13 wheelchair operation stop button 14 restart Button 15 Deceleration start limit switch 16 Ride overrun limit switch 17 Descend deceleration limit switch 18 Descend overrun limit switch 19 Ride-in deceleration limit switch 20 Speaker 21 Three-phase AC power supply 22 Escalator controller with step for wheelchair 23 Converter device 24 Smooth Capacitor 25 DC bus 26 Inverter device 27 Control unit 28 Input interface 29 Operation control means 30 Abnormality monitoring means 31 Output interface

Claims (6)

[Claims] An escalator in which a plurality of steps are connected endlessly is arranged between the entrances on the upper and lower floors in an inclined manner, and in a wheelchair driving mode, a wheelchair step among the steps is adjacent to a step. In a wheelchair-equipped escalator control device that forms a wheelchair-mounted step on the same plane and performs wheelchair driving, a plurality of position detecting devices for detecting the position of the wheelchair step among the steps that go around, a normal operation mode When the vehicle is in a normal operation mode and in a wheelchair driving mode, the operation control means performs a wheelchair operation based on the input information of the position detection device. An escalator control device with a step for a wheelchair, comprising: 2. The abnormality monitoring means determines that the position detection device is abnormal when the input state of the position detection device has continued for a predetermined time or more, or when the input state has not continued for a predetermined time or more. The escalator control device with a step for a wheelchair according to claim 1, wherein: 3. The escalator with a step for a wheelchair according to claim 1, wherein the abnormality monitoring means judges that the abnormality is present when the input order of the plurality of position detecting devices is not the order of their arrangement. apparatus. 4. The apparatus according to claim 1, wherein said abnormality monitoring means measures a distance between each of the plurality of position detecting devices, and judges that the position detecting device is abnormal when the distance is different from an arrangement interval of the position detecting devices. An escalator control device with a step for a wheelchair according to the above. 5. The apparatus according to claim 1, wherein the abnormality monitoring unit prohibits switching from a normal operation mode to a wheelchair operation mode when an abnormality of the position detection device is detected. 2. The escalator control device with steps for a wheelchair according to claim 1. 6. The apparatus according to claim 1, wherein when the abnormality monitoring unit detects an abnormality in the position detecting device, the abnormality monitoring unit notifies the abnormality to the outside. Escalator control device with steps for wheelchair.