JP4163428B2 - Foreign object detection device for passenger doors in railway vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foreign object detection device for a passenger door in a railway vehicle.
[0002]
[Prior art]
The operation of this type of passenger door will be described with reference to FIG. 10. First, the opening operation of the door will be described. That is, when the vehicle decelerates and the 5 km / h detection relay is turned off, the opening / closing switch at the front or rear of the vehicle can be operated. The crew member turns off the open / close switch in anticipation of the stop of the vehicle. The opening / closing switch OFF command enters a door opening / closing control unit (not shown), and an opening command is given from the door opening / closing control unit to the door opening / closing driver of the vehicle, so that the door opens.
[0003]
On the other hand, when the door is closed, the 5 km / h detection relay is OFF, and the crew member turns on the open / close switch in response to the passenger getting on / off operation. The opening / closing switch ON command enters a door opening / closing control unit (not shown), and a closing command is given to the door opening / closing driver of the vehicle from the door opening / closing control unit, and the door is closed.
[0004]
In the mechanism related to the door opening / closing operation, a door closing sensor such as a limit switch that operates according to the mechanical position of the door is provided to detect the door closing state. The closed state of the door is also confirmed by the crew member's visual observation.
[0005]
[Problems to be solved by the invention]
In the passenger door in such a railway vehicle, the door closing sensor may not be detected when the foreign matter caught is small. In this case, it is determined that the door is closed, and the vehicle can run.
[0006]
For example, there is a case where a foreign object is small, such as a shoulder bag, and a door is inserted between strings of the back so that passengers are outside the vehicle (station platform) and the bag is inside the vehicle. In order to prevent accidents caused by the departure of a vehicle by detecting foreign objects while such foreign objects are caught, a method such as monitoring the door meeting part carefully by a monitoring person can be considered, but there is a limit.
[0007]
An object of the present invention is to provide a foreign object detection device for a passenger door in a railway vehicle that can detect whether a small foreign object that cannot be handled by a door closing sensor is caught in the door.
[0008]
[Means for Solving the Problems]
Invention, a door monitoring camera installed in the meeting part top of door for passengers of a railway vehicle, a door opening before the image as a reference image by the door monitoring camera according to the present invention in order to achieve the above object A foreign object detection means for detecting a foreign object in the vicinity of the door by acquiring a post-boarding image as a determination image and comparing the two, a display means for displaying a detection result of the foreign object by the foreign object detection means, and the foreign object A foreign matter determination processing means for acquiring a post-entry image by the door monitoring camera and comparing the pre-door opening image and the post-entry image until the foreign matter is no longer detected when the detection means detects the foreign matter; A foreign object detection device for a passenger door in a railway vehicle.
[0009]
According to the present invention, a door monitoring camera is provided above the meeting portion of each door, and the image before door opening and the image after getting on and off, which is a reference image acquired when the door is closed by the door monitoring camera, are compared. Thus, the presence / absence of a foreign object is determined, and the determination result is presented to the crew, and at the same time, an image of the corresponding part is transmitted. When there are a plurality of corresponding images, it is possible to select a desired location of the crew. The crew can confirm the safety by visually checking the determination result of the image processing and the corresponding image.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a foreign object detection device for a passenger door in a railway vehicle according to the present invention will be described with reference to the drawings.
[0011]
In FIG. 1, a door monitoring camera 1 is provided in the vicinity of the meeting part of all the passenger doors 11 of the vehicle 10, for example, at the upper part outside the meeting part. As shown in detail in FIG. 2, the door monitoring camera 1 is attached to the center of the door upper casing 16 at the top of the door 11 together with the existing left and right door closing sensors 2. Accordingly, when an image is acquired by the door monitoring camera 1 when the vehicle 10 is stopped at the platform 17, for example, an image 6A shown in FIG. 3 is obtained. In the image 6 </ b> A shown in FIG. 3, reference numeral 11 ′ is a video portion of the door 11, 12 ′ is a video portion of the elastic body 12 made of a rubber band or the like at the meeting portion of the door 11, and 17 ′ is a video portion of the home 17. Note that reference numeral 15 in FIG. 2 denotes the floor of the vehicle 10.
[0012]
The door monitoring camera 1 acquires an image before opening the door as a reference image, and acquires an image after getting on and off as a determination image. The acquisition form of the image before opening the door as the reference image is shown in FIGS. 4 and 5, for example. There are examples, and the acquisition form of the post-boarding image as the determination image includes, for example, examples shown in FIGS. 6, 7, and 8. The acquisition form of these images will be described later.
[0013]
The image of the door monitoring camera 1 is sent to the image processor 5 via the image selector 3 and to the crew monitor 6 provided in the crew room via the image transmitter 4.
[0014]
Further, a foreign object detection signal or the like is sent from the image processor 5 to the crew monitor 6. Here, the crew monitor 6 displays a foreign object detection signal from the corresponding door, an image from the selected door monitoring camera 1, etc., together with an instruction for selecting a door monitoring camera, etc. .
[0015]
The image processor 5 compares the pre-door opening image as the reference image and the post-entry image as the determination image, and if a foreign object that does not appear in the pre-door opening image appears in the post-entry image, the image is displayed. A foreign object detection signal is generated for the door of the acquired door monitoring camera 1.
[0016]
In FIG. 1, reference numeral 13 is a door opening / closing switch, 14 is a 5 km / h detection relay, and a door re-opening / closing switch is provided in the crew compartment.
[0017]
Next, a first example of an acquisition form of an image before opening the door as a reference image will be described with reference to FIG. As shown in FIG. 4, the reference image is acquired as an image acquired when the crew member turns on (opens) the door opening / closing switch.
[0018]
In obtaining such a reference image, an image before the door is opened after the vehicle stops can be used as the reference image.
[0019]
Next, with reference to FIG. 5, a second example of an acquisition form of an image before opening the door as a reference image will be described. As shown in FIG. 5, an image is acquired from time to time when the 5 km / h detection relay is turned off (5 km / h or less), and the image is several images before the opening / closing switch is turned off.
[0020]
According to such acquisition of the reference image, it is possible to acquire the reference image before the door opening immediately after the stable stop, when the timing of transmission delay or the like is delayed during the transmission of the image.
[0021]
Next, with reference to FIG. 6, a first example of an acquisition form of a post-embarkation image as a determination image will be described. That is, in order to determine the presence or absence of a foreign object, the determination is performed using the acquired reference image and the image after the door is closed. The image for performing the determination is acquired as needed when a detection signal from the door closing sensor 2 is detected as shown in FIG. The determination is made by comparing the reference image with the image acquired at any time after detecting the door closing detection signal by the image processor 5 until the foreign object is no longer detected (until no change from the reference image). Continue. The crew member monitor 6 displays the presence / absence of a foreign object, the location, and an image selected by the crew member.
[0022]
In this embodiment, when a foreign object hits when determining the foreign object, it can be surely notified to the crew by the crew monitor 6 until the foreign object disappears. It is possible to promptly notify the crew that the problem has been resolved.
[0023]
Next, with reference to FIG. 7, a second example of how to obtain an after-alighting image as a determination image will be described. That is, an image for determining the presence or absence of a foreign object is acquired as needed when a door open / close signal OFF is detected as shown in FIG. The determination is made by comparing the reference image with the image acquired at any time after the door closing command signal is detected by the image processor 5 until the foreign object is not detected (until no change from the reference image). Continue. The crew member monitor 6 displays the presence / absence of a foreign object, the location, and an image selected by the crew member.
[0024]
In this embodiment, when the foreign object is determined, the determination image can be determined immediately before the door closes by using the timing when the crew member's door opening / closing signal is turned OFF. After the door closing is reliably detected, the image processor 5 The foreign matter can be processed, and the reliability is improved.
[0025]
Next, a third example of how to obtain an after-alighting image as a determination image will be described with reference to FIG. In other words, as shown in FIG. 8, the image for determining the presence or absence of a foreign object is acquired from time to time when the crew member is instructed to close the door, and compared with the reference image, only the process of whether the door is closed is image processing After the determination that the door is closed, the image acquired from the next is compared with the reference image as a determination image for foreign object detection. If a foreign object is detected, until the foreign object is not detected (before the door is opened) From time to time, the foreign substance determination process is continued from time to time.
[0026]
In this embodiment, first, processing for determining whether or not a door is closed is performed in a short time, and then processing for determining foreign matter is performed using a determination image, so that foreign matter can be determined immediately after the door is closed, and processing time can be shortened. .
As described above, in the present embodiment, the foreign object detection device according to the present embodiment operates as follows by adopting either the acquisition form of the image before opening the door or the acquisition form of the image after getting on and off, respectively. To do. That is, an image immediately before the vehicle is stopped and the door 11 of the vehicle 10 is opened is acquired by the door monitoring camera 1 and stored in the image processor 5 as a reference image. Thereafter, image processing is performed on the image acquired by the door monitoring camera 1 after the door 11 is opened, the person has finished getting on and off, and the door 11 of the vehicle 10 is closed, and the reference image acquired immediately before the door 11 is opened. The device 5 performs image comparison processing to determine foreign matter. When foreign matter is determined, the image processor 5 displays the presence or absence of foreign matter on the monitor 6. When the crew member makes an image request for the door with foreign objects, the image of the door monitoring camera 1 is selected by the image selector 3 and displayed on the monitor 6 by the image transmitter 4 so that the crew member can make a final decision. it can.
[0027]
With the above operation, even when the door is closed and the door closing sensor reacts and can start, the image of the door meeting part is processed to detect a foreign object, thereby ensuring the safety of passengers.
[0028]
The foreign object detection device described above can be applied to a door mechanism. That is, as shown in FIG. 9, the door opening / closing control unit 19 takes in the output of the 5 km / h detection relay, the output of the opening / closing switch, and the output of the re-opening / closing switch, and outputs the output of the 5 km / h detection relay. When OFF, the output of the open / close switch is accepted. Therefore, when the vehicle decelerates, the 5 km / h detection relay is turned off, and the open / close switch is turned off, the door open / close control unit 19 gives an open command to the door open / close driver 18 to open the door.
[0029]
On the other hand, when the open / close switch is turned on while the 5 km / h detection relay is OFF, the door open / close controller 19 gives a close command to the door open / close driver 18 to close the door.
[0030]
Here, when any one of the door closing sensors 2 remains OFF with the opening / closing switch turned ON, the door of the OFF door closing sensor 2 is opened / closed again by operating the re-opening / closing switch. .
[0031]
In the present invention, when a foreign object that does not turn off the door closing sensor 2 is caught in the door, the door opening / closing control unit 19 that has received the foreign object detection signal reopens and closes the door that holds the foreign object that the door closing sensor 2 does not turn off. A command is given to the door opening / closing driver 18 so as to operate.
[0032]
As described above, in this example, the door that has not been closed by the existing door closing sensor 2 and the foreign object detection device of the present invention and / or the door that is sandwiched with the foreign object without the door closing sensor 2 being operated, It can be automatically opened and closed again.
[0033]
【The invention's effect】
As described above, according to the present invention, the door closing sensor detects when the door is closed and compares the reference image of the door meeting part with the determination image for foreign matter at the doorway that cannot be detected by the door closing sensor even if the door can be started. It is possible to provide a foreign object detection device capable of ensuring the safety of passengers by processing and detecting foreign objects.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a foreign object detection device for a passenger door in a railway vehicle according to the present invention.
FIG. 2 is a view showing an attachment state of the door monitoring camera in the embodiment.
FIG. 3 is a diagram showing an example of an image acquired by a door monitoring camera.
FIG. 4 is a timing chart showing a first example of obtaining a pre-door opening image as a reference image in the present embodiment.
FIG. 5 is a timing chart showing a second example of acquiring a pre-door opening image as a reference image in the present embodiment.
FIG. 6 is a timing chart showing a first example of obtaining a post-boarding image as a determination image in the present embodiment.
FIG. 7 is a timing chart showing a second example of obtaining a post-boarding image as a determination image in the present embodiment.
FIG. 8 is a timing chart showing a third example of obtaining a post-boarding image as a determination image in the present embodiment.
FIG. 9 is a diagram showing a usage form of a foreign object detection signal by the foreign object detection apparatus of the present embodiment.
FIG. 10 is a timing chart showing an opening / closing operation of a passenger door in a railway vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Door monitoring camera 2 ... Door closing sensor 3 ... Image selector 4 ... Image transmitter 5 ... Image processor 6 ... Crew monitor 10 ... Vehicle 11 ... Door 12 ... Elastic body 13 ... Opening / closing switch 14 ... 5km / h detection Relay 15 ... Vehicle floor 16 ... Door upper casing 17 ... Station platform 18 ... Door open / close driver 19 ... Door open / close control unit

Claims (6)

A door monitoring camera installed at the upper part of the meeting section of the passenger door of the railway vehicle;
A foreign matter detection means for the detection of foreign substances of the door near by comparison both to obtain the passenger after the image as a determination image with the door open before the image as a reference image by the door monitoring cameras,
Display means for displaying the detection result of the foreign matter by the foreign matter detection means;
When a foreign object is detected by the foreign object detection unit, a post-entry image is acquired by the door monitoring camera until no foreign object is detected, and the foreign object determination processing unit compares the pre-door opening image and the post-entry image. And a foreign object detection device for a passenger door in a railway vehicle. The foreign object detection device for a passenger door in a railway vehicle according to claim 1 , wherein the image before opening the door of the foreign object detection means is an image acquired immediately after detecting a door opening handling signal by an operation of a crew member. . The door opening front image of the foreign matter detection means, 5km / h sensing relay images periodically obtained from when turned OFF, door closing detection signal even before than when turned OFF, the The foreign object detection device for a passenger door in a railway vehicle according to claim 1, wherein the door is an image in a closed state . The passenger after the image of the foreign matter detection means, the foreign matter detecting device of passengers door in railway vehicle according to claim 1, characterized in that the image when it is detected the door closing detection signal. The passenger after the image of the foreign matter detection means, the foreign matter detecting device of passengers door in railway vehicle according to claim 1, characterized in that the image when it is detected the door close command. A door monitoring camera installed at the upper part of the meeting section of the passenger door of the railway vehicle;
The door monitoring camera acquires an image before door opening as a reference image and an image after getting on / off when a door closing command is detected as a determination image, and compares both to determine whether the door is closed. Door closing determination means;
After determining that the door has been closed by the door closing determination means, the post-boarding image is obtained as a determination image by the door monitoring camera, and the door pre-opening image and the post-boarding image are compared and processed in the vicinity of the door Foreign matter detection means for detecting foreign matter,
Display means for displaying the detection result of the foreign matter by the foreign matter detection means;
When a foreign object is detected by the foreign object detection unit, a post-entry image is acquired by the door monitoring camera until no foreign object is detected, and the foreign object determination processing unit compares the pre-door opening image and the post-entry image. When
Foreign matter detecting apparatus of passengers door in railway vehicle characterized by comprising a.

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