JP2002220046A - Movable home fence equipment - Google Patents

Abstract

(57) [Problem] To provide a movable platform fence device which does not require a large number of obstacle detection means and can reduce the cost. A safety check is performed by an obstacle detection means in a detection area including a crossing path and a both side area from a doorway to a door opening, and the door pocket fence on the side of the doorway is provided. Obstacle detection means 40 provided
Is irradiated so that the laser beam traverses the crossover passage PW, and is scanned in a direction along the crossover passage PW or in an oblique direction to the direction along the crossover passage PW, and is detected by one or a small number of obstacle detection means 40. An obstacle in the area DA can be effectively detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable platform fence device which stands along a side edge on a platform and forms a rail between a train which stops at a fixed position on a track side extending alongside the platform. .

[0002]

2. Description of the Related Art In recent years, with the one-man operation of trains,
Assurance of platform security has become one of the important issues, and a movable platform fence device has attracted attention as one means of ensuring platform security.

In such a movable platform fence device, as shown in FIGS. 5 to 7, a pair of door pocket fences 1 are erected along a side edge on the platform, and a space between the pair of door pocket fences 1 is an entrance. 2
The entrance door 3 is stored in the pair of door pocket fences 1 respectively. Each of the doors 3 protrudes from the pair of door pocket fences 1 and closes the entrance / exit 2, while immersed in the pair of door pocket fences 1 to open the door / door 2.

Before the train arrives, each door 3 protrudes from each door pocket fence 1 and the door 2 is closed. When the train stops, for example, each door 3 gets into each door fence 1 and the door 2 is opened, the door of the train is opened, and the door opening and the door 2 are both opened. , The entrance / exit 2 and the door opening communicate with each other to allow the train to enter / exit, and when the entry / exit is completed, the train door and the entrance / exit 2
Is ready to close. At this time, if no obstacle is detected in the detection area DA including the crossing passage leading to the door opening from the entrance 2 and the door side, the train door and the entrance 2 are closed, and the train can be departed. On the other hand, if an obstacle in the detection area DA is detected, the obstacle is evacuated or removed from the detection area DA, and after confirming the safety in the detection area DA, the train door and the entrance / exit 2 are closed. , Train departure becomes possible.

[0005] An obstacle detecting means for detecting an obstacle in the detection area includes a light transmitting device 5 which is a transmission type sensor mounted on one of a pair of door pocket fences 1 and a transmission type sensor mounted on the other door fence 1. The light receiving device 6 includes a light receiving device 6 serving as a sensor, and is configured so that detection light from the light emitting device passes through the detection region and is received by the light receiving device. As shown in FIG. For example, an obstacle is detected by obstructing an obstacle such as a human.

FIGS. 6 and 7 show the state in which the detection light from one projector 5 does not irradiate the obstacle and the range in which the detection light does not irradiate by hatching. 6 is passed through every corner in the detection area DA, so that there is no omission in detection of obstacles, and the detection area D can be operated safely and smoothly.
In order to reliably and quickly detect the obstacle in A, a large number of detection means (a pair of a transmission type light emitter and a light receiver) are provided.

[0007]

However, in such a conventional movable platform fence device, it is necessary to install a large number of obstacle detecting means including a light emitter and a light receiver in order to reliably and quickly detect an obstacle. There is a problem that the cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and it is intended to reduce costs by reliably detecting obstacles in a detection area with a small number of obstacle detection means. It is an object of the present invention to provide a movable home fence device that can perform the operation.

[0009]

The gist of the present invention to achieve the above object lies in the following inventions. [1] A movable platform fence device (20) that stands upright along a side edge on the platform (10) and forms a rail between the train that stops at a fixed position on the track side extending beside the platform (10). , An entrance / exit (PF) formed on the side of the movable platform fence device corresponding to the door opening (D1) of the train, and a crossing passage (from the door opening (D1) to the entrance / exit (PF)) PW) and obstacle detection means (40) for detecting obstacles in a detection area (DA) including both side areas of the crossing path (PW), wherein the obstacle detection means (40) comprises: The movable platform is irradiated with a laser beam so as to cross the transfer path (PW) and scans in a direction along the transfer path (PW) or in an oblique direction with respect to the direction. Fence device (2 ).

[2] A movable platform fence device which stands along the side edge on the platform (10) and forms a fence with a train stopped at a fixed position on a track side extending beside the platform (10). In (20), the entrance / exit (PF) formed on the movable platform fence device side corresponding to the door opening (D1) of the train, and the door opening (D1) leads to the entrance / exit (PF). Detection area (DA) including the crossing path (PW) and both side areas of the crossing path (PW)
Obstacle detecting means (40) for detecting an obstacle in the vehicle, wherein the obstacle detecting means (40) is arranged so that the laser light is directed in a direction along the crossing path (PW) or in a direction along the direction. A movable platform fence device (20), which is illuminated in an oblique direction and is scanned so as to cross the crossover (PW).

[3] A movable platform fence device which stands along the side edge of the platform (10) and forms a fence with a train stopped at a fixed position on a track side extending beside the platform (10). In (20), the entrance / exit (PF) formed on the movable platform fence device side corresponding to the door opening (D1) of the train, and the door opening (D1) leads to the entrance / exit (PF). Detection area (DA) including the crossing path (PW) and both side areas of the crossing path (PW)
Obstacle detection means (40) for detecting an obstacle in the vehicle, wherein the obstacle detection means (40) transmits detection light formed in a plane by a bundle of substantially parallel rays to the crossing passage ( P
Movable platform fence device (20) characterized in that it irradiates across W).

[4] The obstacle detecting means (40) is mounted on the main body of the movable platform fence device which forms at least one of both side edges of the entrance (PF). The movable home fence device (20) according to [1], [2] or [3].

[5] The obstacle detecting means (40) is provided on the upper part (25) and the lower part (26) of the main body of the movable home fence device which forms at least one of both side edges of the entrance (PF). The movable home fence device (20) according to [1], [2], or [3], which is to be mounted on each of them.

[6] The obstacle detecting means (40) is mounted on the upper edge of the entrance (PF), [1], [2] or [3]. Movable platform fence device (20).

[7] The obstacle detection means (40) is mounted on the ceiling of a platform (10) located above the crossover (PW) [1], [1]. The movable platform fence device (20) according to [2] or [3].

[8] The obstacle detecting means (40) is mounted on a side edge (12) of the platform (10), [1], [2] or [3]. ] The movable platform fence device (20) according to [1].

Next, the operation of the invention described in each of the above items will be described. Before the train arrives at the platform (10), the entrance (PF) is closed. When the movable platform fence device has a door pocket fence (21) and an entrance door (30), the entrance door (30) is a door pocket fence (21).
PF, and closes the entrance (PF).

The train arrives at the platform (10),
When the train stops at a predetermined position, the door (30) sinks into the door pocket fence (21) to open the door (PF). Next, the door opening (D1) of the train is opened, and the train can get on and off. The entrance / exit (PF) and the train door opening (D1) may be opened at the same time, or the train door opening (D1) may be opened earlier than the entrance / exit (PF).

The getting on / off of the train ends when the getting on / off door (30) protrudes from each door pocket fence (21) to close the getting on / off port (PF), and then the train door opening (D1) closes. Further, the entrance / exit (PF) and the train door may be closed at the same time, or the train door opening (D1) may be closed prior to the entrance / exit (PF).

Before the end of getting on and off, the obstacle detection means (40) checks the safety in the detection area (DA) including the crossing path (PW) from the entrance and exit (PF) to the door opening (D1) and both side areas thereof. Performed by The obstacle detection means (40)
By scanning with a laser beam, a planar detection light is formed in a crossover path (PW).

That is, the obstacle detecting means (40) irradiates the laser beam so as to cross the transition path (PW), and also irradiates the laser beam in a direction along the transition path (PW) or in a direction oblique to the direction. Is scanned.

Alternatively, the obstacle detecting means (40) irradiates the laser beam in a direction along the transition path (PW) or in an oblique direction with respect to the direction, and simultaneously executes the transition path (PW).
The laser beam is scanned so as to cross W).

If the laser beam is scanned or irradiated from one side of the entrance / exit (PF) or door opening (D1) to the other side of the entrance / exit (PF) or door opening (D1), for example, the size of the obstacle is reduced. Although it depends on (height), one or a small number of obstacle detection means (40) can effectively detect an obstacle in the detection area (DA).

By scanning the laser beam in this manner, obstacles in the detection area (DA) including the crossing path (PW) and both side areas can be effectively detected.

The obstacle is detected by irradiating the obstacle with a laser beam and, for example, collecting the reflected light from the obstacle on a photoelectric converter (light receiving element) by a light receiving lens (condensing lens) to obtain a detection signal. It is like that. A photoelectric converter (light receiving element) installed before the irradiation of the laser light may detect an obstacle that blocks the laser light.

Further, by scanning the laser beam, the size of the obstacle can be determined, so that small dust and insects do not need to be erroneously detected. Further, by using laser light, malfunction due to disturbance light can be prevented. Further, by adjusting the scanning range of the laser beam, detection areas (DA) having different shapes and sizes can be obtained.
Can be easily and flexibly dealt with.

On the other hand, the obstacle detecting means (40) is not limited to one that scans with a laser beam. That is, for example, the detection light formed in a planar shape by a bundle of substantially parallel light beams may be applied so as to cross the passage (PW). Also in the obstacle detection means (40), the detection light may be irradiated such that the plane of the detection light is orthogonal to the direction of the crossover path (PW).
The detection light may be applied along W) or oblique to the direction along W). The advantage of irradiating the detection light so that the plane of the detection light passes from one side of the doorway (PF) or the door opening (D1) to the other side of the doorway (PF) or the door opening (D1) is as described above. is there.

As described above, in order to form the detection light into a plane by using a bundle of substantially parallel light beams, the light beam may be reflected by, for example, a cylindrical mirror, and the reflected light may be converted into a bundle of substantially parallel light beams. By using not only the cylindrical mirror but also another optical system, a bundle of substantially parallel rays can be formed in a plane.

The obstacle detecting means (40) is provided at the entrance (PF).
To be mounted on a main body of a movable home fence device, for example, a door pocket fence (21), which forms at least one of both side edges of the fence. In such a configuration, for example, a laser beam is irradiated from the side of the crossing passage (PW) so as to cross the crossing passage (PW), and the entrance / exit (PF) or the door opening (D).
1) From one side of the doorway (PF) or door opening (D
The other side of 1) is scanned.

In the detection light formed on the plane, the plane of the detection light is, for example, from one side of the entrance (PF) or the door opening (D1) to the entrance (PF) or the door opening (D1). Irradiated to be passed to the other side.

The obstacle detecting means (40) may be attached to the main body of the movable platform fence device, for example, the upper (25) and lower (26) sections of the door pocket fence (21). Thereby, the upper part (25) and the lower part (26)
The range to be detected by each obstacle detection means (40) is narrowed, and an obstacle in the detection area can be detected in a short time. In particular, the obstacle detection means (40) in the lower section (26) can quickly and reliably detect obstacles such as children that are in the detection area and are hidden behind the door pocket fence (21). it can.

The obstacle detecting means (40) is provided at the entrance (PF).
May be attached to the upper edge. For example, a pair of door pocket fences (2
1) is connected to an arch member, and when the arch member is configured to extend over the entrance (PF), the obstacle detecting means (4) is provided on the upper edge of the entrance (PF) as the arch member.
0) may be attached. In such a configuration, for example, the laser beam is irradiated obliquely from the upper portion on the entrance (PF) side to the lower portion on the door opening (D1) side and scans so as to cross the crossover (PW). Is done. In addition, the detection light formed on the plane is also emitted obliquely, for example, from the upper portion on the door opening (D1) side to the lower portion on the entrance (PF) side.

As described above, when the obstacle detecting means (40) is mounted on the upper edge of the entrance (PF), the obstacle detecting means (40) moves in the direction along the crossing path (PW). Although the laser light is emitted in an oblique direction, when the obstacle detection means (40) is attached to the door (30),
The obstacle detecting means (40) irradiates a laser beam in a direction along a crossing path (PW).

On the other hand, the obstacle detecting means (40) may be mounted on the ceiling of the platform (10) located above the crossover (PW) without providing the arch member.

The obstacle detecting means (40) may be mounted on the side edge (12) of the platform (10). In this case, for example, the laser beam is irradiated obliquely from the lower part on the door opening (D1) side to the upper part on the entrance / exit (PF) side, and is scanned so as to cross the crossover (PW). In addition, the detection light formed on the plane is also emitted obliquely, for example, from the lower part on the door opening (D1) side to the upper part on the entrance (PF) side.

As described above, when an obstacle in the detection area (DA) is detected, the entrance (PF) or door opening (PF) in which the obstacle is opened from the detection area (DA). Evacuate or remove outside of the area through at least one of D1), and enter and exit the doorway (PF) and door opening (D1).
Are closed, and after the safety in the detection area (DA) is confirmed, the train is started.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. The movable platform fence device 20 according to the present embodiment forms a fence between a train that is erected along a side edge on the platform 10 and stops at a fixed position on a track extending beside the platform 10, This is to ensure passenger safety when getting on and off the train.

As shown in FIGS. 1 to 3, the movable home fence device 20 includes a pair of door pocket fences 21 and a pair of entrance / exit doors 30 which can be opened and closed to the side from each door fence 21 to open and close the entrance PF. Consisting of Here, the door pocket fence 21 and the entry / exit door 30 are configured as one unit.

The entrances PF formed between the pair of door pocket fences 21 are arranged at predetermined intervals on the platform 10 and correspond to the door openings D1 of the passenger doors DR of the train that stops at predetermined positions. . The door pocket fence 21 of the movable platform fence device 20 is formed in a flat rectangular box shape as a whole, and the lower end of the door pocket fence 21 is fixed on the foundation of the platform 10.

The door pocket fence 21 is provided with a storage section 22 for storing the door 30 and a drive section (not shown) for opening and closing the door 30 to the side from the storage opening 23 of the storage section 22 to open and close. Have been. The storage section 22 is set to have an inner size in which the entrance door 30 can just fit.

As shown in FIGS. 2 and 4, the entrance PF
Obstacle detecting means 40 are respectively mounted on the upper section 25 and the lower section 26 of the pair of door sack fences 21 of the movable home fence device forming the both side edges. Upper section 25 and lower section 26
Each of the obstacle detection means 40 is provided with a laser beam passing passage PW.
Is scanned so as to traverse. That is, obstacle detection means 40 are attached to the upper section 25 and the lower section 26 on the outer wall surface of the door pocket fence 21 facing the side edge 11 of the platform 10. Obstacle detection means 4
0 is a detection area DA (FIG. 1) including a crossing passage PW from the entrance / exit PF to the door opening and both sides which are both side areas thereof.
And an area that coincides with the scanning area of the laser light drawn by hatching in FIG. 3) to detect passengers, lost objects, and other obstacles. The obstacle detection means 40 on the upper section 25 side can mainly detect the upper part of the detection area DA, and the obstacle detection means 40 on the lower section 26 side.
Can mainly detect the lower part of the detection area DA.

By mounting the obstacle detecting means 40 on the upper and lower portions of the door pocket fence 21, respectively, the scanning range of the laser beam of each obstacle detecting means 40 is narrowed, and the obstacle in the detection area DA is reduced. It can be detected quickly. The lower obstacle detection means 40 is provided with a detection area D
It is possible to quickly and reliably detect obstacles hidden behind the door pocket fence 21 such as a child left inside A.

The optical system of the obstacle detecting means 40 is a polygon mirror 41.
The laser beam is scanned at a high speed at a predetermined rotation speed by using the rotation of (1). The laser light is focused on the focal point by the lens 42, and the polygon mirror 41 reflects the laser light at the focal point. By rotating the polygon mirror 41, the scanning beam is obtained by changing the angle of the reflected laser light.

The laser light reflected by the polygon mirror 41 is converted into parallel light again by the same lens 42 and irradiated so as to cross the detection area DA which is a scanning area. The laser light converted into parallel light is the upper one 25
The scanning is performed obliquely from the upper part on the side toward the middle part on the door opening D1 side, and the lower part 26 is scanning the entrance P
The scanning is performed obliquely from the middle portion of the F side to the lower portion of the door opening D1 side.

That is, the laser beam is scanned so as not to cross the passage PW at right angles to the direction along the passage PW but to cross the passage PW at a predetermined inclination angle. The predetermined inclination angle is determined by the crossing path P
The width, depth, height, etc. of W differ depending on the mounting position of the obstacle detecting means 40, and the tilt angle can be adjusted by adjusting the optical system, such as height, length, width, etc. The configuration is such that one obstacle detecting means 40 can cope with the differently shaped transition passages PW.

The laser light is reflected by the obstacle in the detection area DA, the light reflected by the obstacle is extracted by the beam splitter 44, and further focused on the photoelectric converter 45 by the light receiving lens 43. The time during which the laser light is blocked by the obstacle in the detection area DA is taken out as a gate signal, measured with a pulse of a predetermined frequency while the gate is open, and combined with the scanning speed of the laser light to detect the time within the detection area DA. The size of the obstacle can be calculated.

Next, the operation will be described. Before the train arrives at the platform 10, the entrance / exit PF is in a closed state, and the pair of entrance / exit doors 30 protrudes from the storage section 22 of each door pocket fence 21.

When the train arrives at the platform 10 and the train stops at a predetermined position, each of the doors PF is connected to each door pocket fence 21.
, Respectively, so that the entrance PF is opened. Next, the door opening D1 of the train is opened, so that the train can get on and off. Doorway PF and train door opening D
1 may be opened at the same time, or the train door opening D1 may be opened earlier than the entrance PF.

Before the entry / exit of the boarding / alighting operation, the safety detection in the detection area DA including the crossing path PW from the entrance / exit PF to the door opening D1 and both sides thereof is performed by the obstacle detecting means 40. The obstacle detection means 40 on each of the upper section 25 side and the lower section 26 scans so that the laser beam crosses the crossing path PW. That is, the obstacle detection means 40 on the upper section 25 is scanned obliquely from the upper portion on the entrance / exit PF side toward the middle section on the door opening D1 side, and the obstacle detection means 40 on the lower section 26 is provided on the entrance / exit PF. Door opening D from the middle section on the side
Scanning is performed in an oblique direction toward the lower part on one side. As a result, the obstacle detection means 40 on the upper section 25 side detects the detection area DA.
Mainly detects the upper part, and detects obstacles 4 on the lower part 26 side.
0 detects mainly the lower part of the detection area DA.

When at least one of the laser beams scanned by each obstacle detecting means 40 irradiates the obstacle, the obstacle in the detection area DA can be immediately detected, and the safety in the detection area DA can be detected. Can be checked quickly.

That is, when the obstacle is irradiated with the laser beam, the reflected light from the obstacle is taken out by the beam splitter 44 and condensed on the photoelectric converter 45 by the light receiving lens 43.
Obtain a detection signal. By processing the detection signal, not only the presence of the obstacle but also the size of the obstacle can be detected. In this way, by scanning with laser light,
Since the size of the obstacle can be determined, a true obstacle such as a passenger or a lost object is detected, and a false obstacle such as small dust that does not need to be detected is not erroneously detected.

In order to adjust the scanning range of the laser beam, the rotational speed of the polygon mirror 41 and the position of the lens 42 may be adjusted. Accordingly, the same type of obstacle detection means 40 can easily and flexibly cope with various detection areas DA.

As described above, the irradiation direction of the laser beam from the obstacle detection means 40 is the direction traversing the crossover path PW, and the scanning direction is from the entrance PF side to the door opening D.
It is an oblique direction to one side. Thus, the entire detection area DA can be scanned at once by the small number of obstacle detection means 40.

Generally, the getting on and off of a train is performed by a pair of getting on and off doors 3.
0 protrudes from each door pocket fence 21 to close the entrance / exit PF, and then ends when the train door opening D1 is closed. After getting on and off the train, the train can depart. The entrance / exit PF and the door opening D1 of the train may be closed at the same time.
You may make it close before F.

Before the end of the train entry / exit, that is, at the entrance / exit PF
When an obstacle in the detection area DA is detected immediately before closing the train door opening D1 and the train door opening D1, the detection area DA
The obstacle is retracted or removed from inside through the entrance PF or the door opening D1, and the entrance PF and the door opening D1 are removed.
Is closed, the safety in the detection area DA is confirmed again, and the train is started.

In the above embodiment, the obstacle detecting means 40 is provided on the door pocket fence 21 (the main body of the movable home fence device forming both side edges of the entrance PF) located on the side of the crossing passage PW.
Although the laser beam is radiated so as to cross the passage PW from the side, the obstacle detecting means 40 may be mounted on the upper edge of the entrance PF. In particular,
When the pair of door pocket fences 21 are connected by an arch member extending above the entrance / exit PF, the entrance / exit PF
One or a plurality of obstacle detecting means 40 may be mounted side by side on the arch member forming the upper edge. At this time, for example, the laser beam of each obstacle detection means 40 is irradiated from above the entrance / exit PF side to the door opening D1 side in an oblique direction (in an oblique direction with respect to the direction along the crossover path PW). Scanned across the PW.

Alternatively, for example, each obstacle detecting means 40
Laser light crosses the passage PW from diagonally above the entrance PF
And is scanned in a direction along the crossover path PW or in a direction oblique to the direction along the crossover path PW.

The obstacle detecting means 40 may be mounted on the door 30. When mounted on the tip of the door 30, the laser beam is irradiated in the direction along the crossover path PW and scanned so as to cross the crossover path PW. When attached to the base end of the door 30,
The laser light is applied to traverse the crossing path PW,
In addition, scanning is performed in a direction along the crossover path PW or in a direction oblique to the direction along the direction.

As described above, one or a plurality of predetermined obstacles are arranged on the ceiling of the platform 10 located above the entrance / exit PF or the crossover PW without using the arch member provided on the pair of door pocket fences 21. Means 40 may be mounted. At this time, the laser beam irradiates the transfer path PW from above the transfer path PW, and scans so as to cross the transfer path PW. Alternatively, for example, the laser beam of each obstacle detecting means 40 is irradiated from diagonally above the entrance / exit PF so as to traverse the crossover passage PW, and in a direction along the crossover passage PW or in a direction oblique to the direction along the crossover passage PW. Is scanned.

Further, the obstacle detecting means 40 may be mounted on the side edge portion 12 of the platform 10 without using the arch member. A storage recess is formed in the side edge portion 12 of the platform 10, and the obstacle detecting means 40 is fitted into the storage recess so as to be fitted. At this time, for example, a laser beam is applied to the passage PW from below,
Further, scanning is performed so as to cross the crossover path PW. Alternatively, a laser beam is irradiated from below to traverse the crossover path PW, and scanning is performed in a direction along the crossover path PW or in a direction oblique to the direction along the crossover path PW.

As described above, the obstacle detecting means 40 includes the door pocket fence 21 and the upper edge of the entrance PF,
Although it is installed at each predetermined position of the ceiling or the side edge portion 12 of the platform 10, the obstacle detection means 40 to be installed at each predetermined position may be used in combination.

The obstacle detecting means 40 is not limited to one that scans with a laser beam. That is, for example, the detection light formed in a planar shape by a bundle of substantially parallel rays
Irradiation may be performed so as to cross W. As described above, in order to form the detection light into a planar shape by using a bundle of substantially parallel light beams, the light beam may be reflected by, for example, a cylindrical mirror, and the reflected light may be converted into a bundle of substantially parallel light beams. In order to form the bundle of substantially parallel light rays in a plane, not only a cylindrical mirror but also other optical systems can be used.

At this time, the width of the planar detection light differs depending on how it crosses the crossover path PW. That is, if it crosses from the side of the crossing passage PW, it is longer than the length of the crossing passage PW, and crosses so that it may be diagonally bridged from the upper part of the entrance PF side to the lower part of the door opening D1 side. For example, it substantially corresponds to the length from the upper part on the entrance PF side to the lower part on the door opening D1 side.

Further, the detection light in the form of a plane passes through the passage PW.
, The width of the planar detection light is equal to or larger than the width of the detection area DA including the crossover path PW and both sides thereof.

[0065]

According to the movable platform fence device of the present invention, the safety in the detection area including the crossing passage from the entrance / exit to the door opening and the both side areas is checked by the obstacle detection means, and the obstacle detection is performed. In the means, the laser beam is irradiated so as to traverse the crossing path, and the scanning is performed in a direction along the crossing path or obliquely to the direction along the crossing path. It is possible to effectively detect obstacles inside the vehicle and reduce costs.

Further, since the obstacle detecting means is mounted on the upper and lower portions of the main body of the movable platform fence device which constitutes at least one of both side edges of the entrance, the obstacle detecting means should detect each obstacle. The range is narrowed, and obstacles in the detection area can be detected in a short time.
The obstacle detecting means on the lower side can quickly and reliably detect an obstacle such as a small child, which is in the detection area and is hidden behind a door pocket fence.

[Brief description of the drawings]

FIG. 1 is a plan view showing an installed state of a movable home fence device according to an embodiment of the present invention, showing a state where an obstacle is present in a detection area.

FIG. 2 is a perspective view showing an installed state of a movable home fence device according to one embodiment of the present invention.

FIG. 3 is a plan view showing an installed state of the movable home fence device according to one embodiment of the present invention, showing a state where no obstacle is present in a detection area.

FIG. 4 is a block diagram of an obstacle detecting unit according to one embodiment of the present invention.

FIG. 5 is a plan view showing an installed state of a movable home fence device according to a conventional example.

FIG. 6 is a plan view showing an installed state of a movable platform fence device according to a conventional example, and shows a state in which detection light from a projector does not irradiate an obstacle.

FIG. 7 is a plan view showing an installation state of a movable home fence device according to a conventional example, and shows a range in which detection light from a projector is not irradiated.

[Explanation of symbols]

 D1: Door opening DA: Detection area DR: Passenger door PF: Passenger entrance PW: Passageway 10: Platform 12: Side edge 20: Movable platform fence device 21: Door pocket fence 22: Storage unit 25: Upper section 26: Lower section DESCRIPTION OF SYMBOLS 30 ... Doors 40 ... Obstacle detection means 41 ... Polygon mirror 42 ... Lens 43 ... Light receiving lens 44 ... Beam splitter 45 ... Photoelectric converter

Claims (8)

[Claims] 1. A movable platform fence device that stands along a side edge on a platform and forms a fence between the train and a train that stops at a fixed position on a track side that extends beside the platform. To detect obstacles in the detection area including the entrance / exit formed on the movable platform fence device side and the entrance / exit from the door opening to the entrance / exit and the both sides of the entrance. The obstacle detection unit has a laser beam emitted so as to traverse the transition path, and is scanned in a direction along the transition path or in a direction oblique to the direction along the transition path. A movable platform fence device characterized in that: 2. A movable platform fence device which stands along a side edge on a platform and forms a rail with a train stopped at a fixed position on a track side extending beside the platform, wherein a door opening of the train is provided. To detect obstacles in the detection area including the entrance / exit formed on the movable platform fence device side and the entrance / exit from the door opening to the entrance / exit and the both sides of the entrance. The obstacle detecting means has a laser beam emitted in a direction along the crossing path or in a direction oblique to the direction along the crossing path, and is scanned so as to traverse the crossing path. A movable platform fence device characterized in that: 3. A movable platform fence device standing along a side edge on a platform and forming a rail with a train stopped at a fixed position on a track side extending alongside the platform, wherein a door opening of the train is provided. To detect obstacles in the detection area including the entrance / exit formed on the movable platform fence device side and the entrance / exit from the door opening to the entrance / exit and the both sides of the entrance. Movable means, wherein the obstacle detection means irradiates the detection light formed in a planar shape by a bundle of substantially parallel light rays so as to traverse the crossover path. Home fence equipment. 4. The apparatus according to claim 1, wherein said obstacle detecting means is mounted on a main body of said movable platform fence device which forms at least one of both side edges of said entrance.
Or the movable platform fence device according to 3. 5. The obstacle detecting means is mounted on an upper step and a lower step of a main body of the movable platform fence device which forms at least one of both side edges of the entrance. Item 5. The movable platform fence device according to item 1, 2 or 3. 6. The system according to claim 1, wherein said obstacle detecting means is mounted on an upper edge of said entrance.
Or the movable platform fence device according to 3. 7. The movable platform fence device according to claim 1, wherein the obstacle detecting means is mounted on a ceiling of a platform located above the crossing passage. 8. The movable platform fence device according to claim 1, wherein the obstacle detecting means is mounted on a side edge of the platform.